They spent half the time looking for a parking space.

他们花了一半的时间寻找停车位。

The workers were not better organized, otherwise they would have accomplished the task in half the time.

没有更好地把工人们组织起来，否则他们用一半的时间就能完成任务。

Half the time you don't even listen to what I say.

你大部分时间甚至没听我说的话。

Half the time, I don't have the slightest idea what he's talking about.

我常常对他所谈论的没有一丁点儿概念。

They guessed wrong half the time.

结果他们猜错了一半。