He walked two miles in half an hour . | 他在半小时内走了两英里。 | It took half an hour . | 花了半个小时。
I have been waiting for almost half an hour . 我已经等了快半个小时了。
Let's break off for half an hour and have some coffee . 我们休息半小时，喝点咖啡吧。
They'll walk there in half an hour . 半小时后他们就会步行到那儿。
He made me wait for about half an hour . 他让我等了大约半个小时。
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