1. shut down 关闭
The computer system will be shut down over the weekend.
计算机系统周末关闭
。2. get hold of 得到;抓住
Tell Richard I'm going to kill him when I get hold of him.
告诉理查德,我要抓住他就杀了他
。3. a collection of 一些;一批
A collection of paintings by different world-famous painters is on exhibition at the Museum of Art.
由不同世界著名画家所画的绘画作品集正在艺术博物馆展出
。4. for a while 暂时
I think you'd better lay off fatty foods for a while.
我认为你最好暂时别吃高脂食物
。