重点讲解:
1. convert into (使)改变;更改;(使)转变;
Convert food into absorbable substances.
把食物转化为可吸收的物质。
2. in operation 使用;运作;
The new machine is now in operation.
新机器已经开始使用。
3. on board 在火车(或轮船、飞机)上;
The cargo on board have been damaged by sea water.
船上的货物因水湿而残损。
4. come down with 染上,得了(病);
I feel dizzy and suffocated. I think I have come down with heatstroke.
我感到头晕,喘不上气来。我想是中暑了。
adj. 悬浮的;暂停的,缓期的(宣判)