我应该想到过去的四年半。

I should think about half past four years.

youdao

在过去的10年中，自动化已经减少了这里一半的劳动力。

In the last ten years automation has reduced the work force here by half.

《柯林斯英汉双解大词典》

在过去的四年里，雅典县的福利名单被削减了一半。

In the past four years, welfare rolls in Athens County have been cut in half.

youdao

They don't need anything from the past.

他们不需要来自过去的一分半毫

耶鲁公开课 - 美国内战与重建课程节选