if-expression
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释义
[计] 如果表达式；
权威例句
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1. It's annoyingly easy to write an if-expression where you get the two alternatives the wrong way around.
这是烦人的易于编写一个如果表达式，你得到两个选择错误的方式。
youdao
2. If she were not so sallow and had a nicer expression, her features are rather good.
如果她脸色不这么灰黄，表情好一点，那她的五官会很好看。
youdao
3. The place was, if you'll pardon the expression , a dump.
那个地方，请恕我直言，简直是个垃圾场。
《牛津词典》
4. He's a pain in the butt, if you'll pardon the expression.
请原谅我这么说，他是一个讨厌透顶的家伙。
《牛津词典》
5. What do you think should happen if I evaluate that expression?
你认为我对表达式求值的话,会发生什么？
youdao
6. If an expression contains values outside the remote limits, those expressions cannot be pushed down.
如果一个表达式包含超出远程限制的值，那么就不能下推那些表达式。
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7. If you enter an invalid expression, the text turns red.
如果您输入一个无效的表达式，其文本将变为红色。
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8. You can compare data to a regular expression; if they match, you know your data is valid.
您可以将数据与正则表达式进行比较，如果它们匹配，则知道数据是有效的。
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9. If the expression doesn't contain any more parentheses, the process of evaluation is finished.
如果表达式再不包含任何其它的括号，求值(过程)完成。
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10. It is not that we would not know what the loss meant if there was no expression; we would know, but we wouldn't feel it fully if medications soothed our despair.
如果不表达的话，那我们就不会知道失去意味着什么；我们可能知道，但如果药物治疗安抚了我们的绝望，那我们可能不能完全感受到。
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11. If neither is possible, any expression using a large string needs to be evaluated locally.
如果两种形式都不行，那么任何使用大型字符串的表达式都需要在本地计算。
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12. If a method body has more than one expression, you must surround it with curly braces {...}. You can omit the braces if the method body has just one expression.
如果一个方法的主体包含多于一个的表达式，你必须用大括号来把它们包起来。你可以在方法主体只有一个表达式的时候省略大括号。
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13. Step 3: If the expression doesn't contain any more parentheses, the process of evaluation is finished.
步骤3：如果表达式中不包含其它括号，求值的过程就完成。
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14. If the expression contains parentheses but no operators, there is a function here.
如果表达式包含括号，但不包含操作符，则存在一个函数。
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15. The WHERE clause contains two expressions that are joined by the or operator, which means that if either expression evaluates as TRUE for a specific row, that row will be deleted.
where子句包含由OR操作符联结的两个表达式，这意味着对于特定行，如果任一表达式值为TRUE，则将删除该行。
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16. If a logical expression is hard to understand, try transforming it.
如果一个表达式的逻辑不容易理解，则需要试着改变其形式。
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17. If the postfix expression was correctly formed, the stack should be empty.
若后缀表达式格式正确，那么堆栈应该为空。
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18. You can create a more attractive expression if you have your model lower the chin because it will increase the size of the eyes.
通过收下巴，你的模特可以拥有更迷人的表情，因为这样眼睛就显得大了。
youdao
19. If the expression contains parentheses but no operators, there is a function here that needs to be evaluated.
如果表达式包含括号，但不包含操作符，则存在需要求值的函数。
youdao
20. If the expression results in more than one node, then only the first node is used.
如果表达式产生多个节点，则仅使用第一个节点。
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21. As the test man page states, the test command evaluates expression parameters and, if the expression value is True, returns a zero (True) exit value.
正如test的手册页指出的，test命令运算表达式参数的值，如果表达式的值是True，就返回零(True)退出值。
youdao
22. If the XPath expression contains a % sign itself, it must be escaped as specified by XML (using %).
如果XPath表达式本身包含%，则必须按xml的指定方式将其转义(使用%)。
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23. Otherwise, if the expression is not a constant, another macro function is called to round up the value to a power of two.
如果表达式不是常量，就调用另一个宏函数把值向上取整到2的幂。
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24. If your expression evaluates as false and thereby triggers an assertion failure, a predefined routine called assertion_failed declared in the header file assert.hpp is executed.
如果您的表达式计算得到false，因此触发了一个断言失败，那么将执行在头文件assert . hpp中声明的一个名为assertion_failed的预定义例程。
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25. If an XPath expression contains a percent sign itself, it must be escaped, as specified by XML (using %).
如果XPath表达式本身包含一个百分号，则必须按xml的指定方式将其转义(使用%)。
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26. If the expression you're passing in to the parser code can't be legally constructed according to the grammar, either a ParseException or a LexicalError is thrown.
如果正在传递给解析器代码的表达式不能根据语法合法地构造，则将抛出ParseException或LexicalError。
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27. Because Python requires indentation to offset the block of statements that should be executed if the expression evaluates True or False, the two print statements are both indented four Spaces.
因为Python需要缩进以错开当表达式计算为True或False时应该执行的语句块，所以两个print语句都缩进了4个空格。
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28. The type inference picks a type that works for all outcomes of the if expression.
类型推断选择了一个满足if表达式所有结果的类型。
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29. The XMLEXISTS is a Boolean function that takes an XPath expression as input and returns FALSE if the XPath expression returns an empty sequence and TRUE otherwise.
XMLEXISTS是一个Boolean函数，它接受一个XPath表达式作为输入；如果这个XPath表达式返回空序列，它会返回FALSE，否则返回TRUE。
youdao
30. The XMLEXISTS is a Boolean function that takes an XPath expression as input and returns FALSE if the XPath expression returns an empty sequence and TRUE otherwise.
XMLEXISTS是一个Boolean函数，它接受一个XPath表达式作为输入；如果这个XPath表达式返回空序列，它会返回FALSE，否则返回TRUE。
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if-expression
