They did nothing but complain.

他们只知道抱怨。

youdao

They did nothing but complain.

他们老是一个劲地抱怨。

youdao

He did nothing but complain.

他只是抱怨，什么也不做。

youdao

But regular convention goers complain the event has become too big.

VOA: standard.2010.07.23

but you can't complain when it's February and it's almost 70 degrees today.

但在2月份里能有70华氏度的天气，你也不能说什么了。

旧金山的天气 - SpeakingMax英语口语达人

But Israelis often complain that it is a "cold peace."

VOA: standard.2009.07.27

However, if you plan to do nothing but complain, it is a total waste of your time.

FORBES: Move up http://i.forbesimg.com t Move down

The students, the letter affirms, were not trying to overthrow the party, but complain about shortcomings, notably corruption.

ECONOMIST: Out of the shadow of Deng

Though the US government promised to enforce its arms-control agreements with the Soviet Union, Soviet violations were numerous, and the US did nothing but complain (and little of that).

CENTERFORSECURITYPOLICY: The Big Picture Is Bad