农场被淹，收成损失了一大半。

The farm was flooded, with the result that most of the harvest was lost.

只要迈出第一步，离成功就近了一大半。

As long as the first step, from the success of the nearest half.

你愿意要一大半，还是要一小半?。

Would you like the big half or the small half?

现在一大半的也门人每天都嚼咔特，这会有不良效果。

Now more than half of Yemenis chew it daily.This has bad effects.