重点讲解:
1. take off 脱下,脱掉;
He wouldn't take his hat off.
他不肯摘下帽子 。
2. consist of 由…组成;由…构成;
The committee consists of ten members.
委员会由十人组成 。
3. convert into (使)改变;更改;(使)转变;
The signal will be converted into digital code.
信号会被转变为数字代码 。
4. run out of 用完;耗尽;
They have run out of ideas.
他们已经想不出任何办法了 。
adj. 到处存在的,遍在的