a tough nut
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n.
难对付的人， 与之打交道有危险的人；
双语例句
I asked her for the money, but she was a tough nut to crack and I went away without it.
我向她要钱，但她这个人很难对付，因此我空手而归。
The final exam was a tough nut.
毕业考试不好对付。
She's a tough nut to crack; I don't think she'll give us permission.
她这个人不好说话，我想她不会答应我们的。
权威例句
A Tough NutA Tough Nut
A Tough Nut
The coccidian oocyst: a tough nut to crack!
A Hard Nut to Crack: The Protection of Technological Measures
The lymph follicle: a hard nut to crack
Introduction to the special issue on multiword expressions: Having a crack at a hard nut
Speciation of Se in Bertholletia excelsa (Brazil nut): a hard nut to crack?
Work-ability evaluation: A piece of cake or a hard nut to crack?
A Tough Nut for Proof Procedures
Why patient safety is such a tough nut to crack.
The Chlamydial Type III Secretion Mechanism: Revealing Cracks in a Tough Nut
Nutrition: a hard nut to crack. An exploration of the knowledge, attitudes and activities of qualified nurses in relation to nutriti...
1. But embedded computing is a tough nut to crack.
但嵌入式计算是一块难啃的硬骨头。
youdao
2. There are some promising drugs in the pipeline. But it's been a really tough nut to crack.
有一些前景不错的药品已经在研发之中，但要真正实现确实还很不容易。
youdao
3. My new boss is a tough nut to crack. I never know if he's pleased with my work.
我的新老板是个很难相处的人。我永远也不知道他是否对我的工作满意。
youdao
4. This is a tough nut to crack. It's going to take some time to figure out.
这是一件棘手的事。要花些时间才能想出来。
youdao
5. Sunday's match will be a tough nut to crack.
周日的比赛将是场硬仗。
youdao
6. Michael Jackson appears to be a tough nut to break.
迈克尔·杰克逊似乎是一个颇为棘手的问题。
youdao
7. He 's a tough nut, but I think I can get him to agree to the contract.
他就是个硬石头，但是我觉得我能让他接受这份合同。
youdao
8. It is a tough nut for him to crack.
这对他而言是一个难题。
youdao
9. That guy is a tough nut.
那个家伙很难缠。
youdao
10. This is a tough nut to crack.
这是一件棘手的事。
youdao
11. And so this is going to be a tough nut to crack.
所以这将会是一项棘手的任务。
youdao
12. What makes the brain such a tough nut to crack?
是什么让大脑成为如此难砸的死硬坚果？
youdao
13. What makes the brain such a tough nut to crack?
是什么让大脑成为如此难砸的死硬坚果？
youdao
a tough nut
