be on guard
释义
防范；惕励；惕历；
双语例句
Troops are on the alert against any possible aggression.
军队戒备着可能的来犯。
权威例句
BE ON GUARDBe on guard
On guard vehicle safety warning system
Strenthen the prophylaxis and treatment to AIDS and pevfect systems in order to be on guard to new public bealth event
Heating chamber with insulative shield panel and electric heating panels mounted on guard frames
Clip-on guard
Be on Guard with Technical Risks and Managerial Mistakes in Electronic Administration
Be on guard for Palmer amaranth
Be on guard for white mold
As swine flu marches on, be on guard for other bacterial bugs
1. The police have questioned him thoroughly, and he'll be on his guard.
警察已仔细盘问了他，因此他会保持警惕。
《柯林斯英汉双解大词典》
2. A police spokesman said that this was the third bomb scare within a week and that we should all be on our guard.
一名警方发言人表示，这是一周内的第三次炸弹恐吓，我们都应该保持警惕。
youdao
3. Alo on display will be electronic engine control, currently in production to upgrade CH-47 and UH-60 helicopter engine for the U.S. Army and National Guard.
同时展出的还将有发动机控制电子装置，目前正在生产并用于升级美国陆军和国民警卫队的CH-47和UH-60直升机发动机。
youdao
4. At the outset, it seemed necessary to be on guard against the other two.
一开始，似乎有必要提防另外两个。
youdao
5. If people knew that other motives might compromise the accuracy of their beliefs, most would probably try to be on their guard.
如果人们意识到其他的动机有可能会损害他们信念的准确性，那大部分人都会试图保持警惕。
youdao
6. Be on your guard against pickpockets.
提防扒手。
《新英汉大辞典》
7. This fellow is very crafty; we had better be on our guard.
这个家伙诡计多端，我们可得小心点儿。
《新英汉大辞典》
8. Two soldiers must be on guard all night.
两名战士必须通宵警戒。
youdao
9. Thus, you should be on guard against this confused mapping.
因此，您应该谨防这种有混淆的映射。
youdao
10. In the absence of a common goal or common enemy, they prefer to be on guard against each other.
在缺乏共同目标或共同敌人的情况下，他们宁愿相互防备。
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11. We must also be on guard that we don't confuse such objective qualities as "oiliness" or "big-capness" or "consumerness" with what actually drives stock prices from day to day.
我们还必须要警惕，不能将“石油”或“大盘”或“消费”这些客观因素与每一天真正驱动股价的原因相混淆。
youdao
12. The animal that goes to a favorite food-foraging location and sees signs that a predator was there - but not the predator itself - may be on guard the next time.
在某些情况下，我们会幻想自己的先人又复活了。 “一个动物到它最喜欢觅食地点，看到有个食肉动物一在那里的迹象，但不是食肉动物本身，可能是上次（下次）在那里站岗。
youdao
13. A few hours earlier, Li had reminded us again to be on guard against thieves, but Handy said, “Italy is not as chaotic as they made it seem. It sounded really terrifying.”
“李导游曾经提醒过我们要提防小偷，不过Handy却不以为然：”意大利没有人们说的那么乱，不过传闻什么的听起来也吓人的很。
youdao
14. A few hours earlier, li had reminded us again to be on guard against thieves, but Handy said, "Italy is not as chaotic as they made it seem."
几小时以前，李导游还再次提醒我们要地方小偷，不过Handy说，“意大利没他们说得那么混乱。”
youdao
15. Be on guard against those who try to lie themselves into our confidence.
要警惕那些试图用谎言来骗取我们信任的人。
youdao
16. Especially are we urged to be on guard against those infatuating attempts to breach the barricades of the mind.
我们特别被敦促要警醒提防，绝不允许那些令人混乱之尝试使心中的壁垒有了破口。
youdao
17. While danger threatens, we must all be on guard.
危险正在逼近，我们必须保持警惕。
youdao
18. Two soldiers must be on guard all night.
必须有两个士兵整夜站岗。
youdao
19. You should be on guard when a stranger comes to your doors.
当陌生人站在你家门前是，你应该有所堤防。
youdao
20. I must protect myself and be on guard.
我必须保护自己、保持警惕。
youdao
21. To be on guard against theft, the school has issued regulations specifying the duties of the door keepers.
为了防止盗窃，学校已经制定规章制度，明确规定了大楼看管员的职责。
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22. And I will be on guard against two evils: hastiness and indecision.
而且我将防范两个邪恶：草率、优柔寡断。
youdao
23. While danger threat ens we must all be on guard.
危险正逼近，我们必须保持警惕。
youdao
24. Be on guard against those who are jealous of your success.
要提防那些嫉妒你的成功的人。
youdao
25. When you have to deal with the local merchants, you have to be on guard against being strung along.
你在和当地的商人打交道时，你必须提防上当受骗。
youdao
26. When you have to deal with the local merchants, you have to be on guard against being strung along.
你在和当地的商人打交道时，你必须提防上当受骗。
youdao
be on guard
