By half distance we held a comfortable two-lap lead.

赛程未过半我们就轻易领先了两圈。

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

在过去的10年中，自动化已经减少了这里一半的劳动力。

Get it done by half past two.

在两点半之前完成它。

The workforce has been slashed by half.

职工人数裁减了一半。

We'll need to reduce the weight by half.

我们得把重量减轻一半。