风向的英文：
【机】 air course

参考例句：

A straw shows which way the wind blows.
草动知风向/见微知著。

The wind will south this evening.
今天傍晚，风向将转南。

To the windward side.
迎风，向风对着风向的一边

(of wind)change gradually in an anti-clockwise direction(eg from E to NE to N)
(指风向)循反时针方向逐渐改变(如由东风转为东北风再转为北风).

The wind veers aft and hauls forward.
风向忽前忽后。

A shift in the wind.
风向的改变

The wind chopped back to S. E.
风向突然转回东南。

The direction of the wind is constantly changing.
风向不断变化。

I am afraid the wind may chop about towards evening
傍晚风向恐怕会改变。

A ship standing to windward.
朝着风向航行的航

air是什么意思：
n. 空气；大气；天空；空间；微风；样子；神态；气氛
v. 晾；通风；广播

There was not a breath in the air.
一丝风也没有。

a nip in the air
空气中有一种刺肤的寒冷

To fish in the air
海底捞月

Clean the air intakes regularly for sufficient air flow
定期清理进风口以保证有足够的空气流量

The switch hovered in the air.
鞭子在空中摇晃。

course是什么意思：
n. 过程；课程；方针；系列

a bobsleigh course
大雪橇滑道

It is not, of course, exhaustive
当然这是不够详尽的。

In college, English is a required course and psychology is an elective course.
在大学里，英语是必修课而心理学是选修课。

The checks are all good, of course.
当然，这些支票是完全有效的。

Of course, this can be abused.
当然了，这样还是可能会被滥用。