They waited for about two hours.

他们等了大约两个钟头。

《柯林斯英汉双解大词典》

After spotting a wallet on the front seat inside a parked car with its window down, he stood guard in the rain for about two hours waiting for the owner to return.

他透过摇下的车窗，在一辆停着的车的前座上发现了一个钱包，于是在雨中守了大约两个小时，等待车主回来。

youdao

He was with us for about two hours.

它大概陪了我们两个小时。

youdao

It is mixed for about two hours with some common chemicals and then allowed to cool.

VOA: special.2011.07.25

And if you are prepared to stand up for about two and a half to three hours to watch a play,

而且你要准备好了站上大约两个半小时到三个小时，去看一场戏剧，

莎士比亚环球剧院 - SpeakingMax英语口语达人

The older kind of submarine used in World War Two could stay under water for only about forty-eight hours.

VOA: special.2010.06.11

He ran for about two hours, always heading downhill, until he entered a mountain valley.

WSJ: Escape From a North Korean Prison

Users reported problems accessing Facebook.com in many countries, including the UK, for about two hours.

BBC: Facebook hit by technical problem across Europe

We have been out in the bay for about two hours and have not seen another boat.

CNN: King: Waterman finds Chesapeake Bay 'dying daily'