1
a toughie
常指难以解决的问题。
This math problem is a toughie.
这道数学题是个难题。
恶棍；流氓
toughies — plural of toughie
先理解核心含义，再看它在真实句子里的用法。
恶棍；流氓
an aggressive and violent young criminal
This math problem is a toughie.
这道数学题是个难题。
坚强而有韧性的人或事物
Someone or something that is strong and resilient.
恶棍；行为粗暴的人或事物
A tough; Someone or something that acts as a thug or bully.
The last question on the exam was a real toughie.
考试的最后一道题真是个难题。
Some of the riddles in the book are real toughies.
这本书里有些谜语确实是难题。
We worked on the toughie for an hour before finding the trick.
我们花了两个小时钻研这个难题，才找到窍门。
常指难以解决的问题。
This math problem is a toughie.
这道数学题是个难题。
用于形容人，表示‘恶棍’或‘劲敌’。
He is a toughie who never backs down.
他是个从不退缩的恶棍。
复数形式，可指多个难题或恶棍。
The exam contained several toughies.
考试中有几个难题。
Not this
This question is toughie.
Use this
This question is a toughie.
toughie是可数名词，不能用作形容词，需加冠词a。
Not this
There are many toughie in the exam.
Use this
There are many toughies in the exam.
toughie是可数名词，复数形式要加-s。
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可数名词，指难题或恶棍
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.