v. （使）变冷；冷静下来 =calm / settle down

翻译.

1) I knew I had to keep cool.

2) The rain has cooled the air.

3) Let your soup cool a little before you drink it.

4) A heated argument can be settled better if both

sides cool down first.

5) I tried to cool her down but she was still very angry when she left.

Ⅲmultiply (数目上)增加，增多；乘；（使）繁殖

1) Our problems have multiplied since last year.

2) 2 and 5 multiply to make 10.

3) ~ A by B or ~ A and B together

6 multiplied by 5 is 30.

One can make 12 by ~ing 2 and 6

4) The plants here multiply rapidly.

Ⅳencourage 鼓舞；促进；怂恿。后接名词、代词，也可接不定式作宾语补足语。

翻译

High prices for corn and wheat will encourage farming.

My success encouraged me to continue

He encouraged me to learn dancing.