Could you spare one of your staff to help us out?
你能不能从你手下抽一个人过来帮帮我们？
God help us if this doesn't work.
如果这个行不通，那就要靠上帝了。
Stick around; we'll need you to help us later.
别走开，过一会儿我们还需要你帮忙呢。
This information will help us build a picture of his attacker.
这条信息将有助于描画出袭击他的人的相貌。
She won't be able to help us with all the family commitments she has.
她有这么多家务事，帮不了我们。