她总是对人家的穿着评头论足，却从不给任何建设性意见。

She always ___snipes at people's outfits but never offers any constructive advice.

狙击手从屋顶隐蔽处向目标射击。

The sniper ___sniped at the target from a hidden spot on the roof.

我们在沼泽地看到几只鹬鸟在觅食。

We saw a few ___snipes hunting for food in the marsh.