狠

这只野兽的眼神看起来非常凶狠，让人害怕。

The wild animal has a very fierce look in its eyes, which is frightening.

不要说话太狠，以免伤害到身边朋友的感情。

Don't be too harsh in the way you speak, or you may hurt your friends' feelings.

他狠了狠心，把陪伴自己多年的车给卖了。

He hardened his heart and sold the car that had been with him for many years.

看到孩子哭得这么伤心，她实在狠不下心来惩罚他。

Seeing the child crying so sadly, she simply could not bring herself to punish them.

他今天狠下了一番功夫，终于把这道难题做出来了。

He put in a tremendous amount of effort today and finally solved the difficult problem.

考试快到了，你得狠抓一下弱势科目才行。

The exam is coming up, so you need to focus hard on your weaker subjects.