He stooped down, cut the stem for her with his knife and handed her the flower.

他弯下腰，用刀替她割下花茎，然后把花递给她。

《柯林斯英汉双解大词典》

He is whittling down the branch with a knife to make a handle for his hoe.

他在用刀削树枝做一把锄头柄。他在用刀削树枝做一把锄头柄。

youdao

Looking around FOR a while, the murderer thrust his knife down the dustbin.

左右看了一会，谋杀犯把刀扔进垃圾箱。

youdao

It's a proxy for Berkshire Hathaway, which hasn't escaped the market's knife, down 25%.

FORBES: My 50% rule