height是high的名词形式，意思是身高、高度。具体数值的高度，是用...feet/metres in height = a height of...feet/metres 表示。
The plane flew at a height of 3 000 metres.
It is almost 2 metres in height .
The tree is 30 meters in height.
height 还有一个意思是高处、高地，是可数形式，恐高就可以说 a fear of/be afraid of heights。在一些特定的地名中，是用复数形式 heights 表示。height从高处可以衍生出高水平或成功、收获的意思，rise to/reach new/great/dizzy heights 意思就是达到新的高度。例句：
He doesn't have a head for heights (= is afraid of high places) .
I'm not afraid of heights.
Recently the speculation has reached new heights
They took ice dancing to new heights.
We looked out over the city from the heights of Edinburgh Castle.
Their success had reached new heights .
She dreamed of reaching the dizzy heights of stardom.
the height of sth
It would be the height of folly (= very stupid) to change course now.
He was struck down at the height of his career
At the height of the summer season there can be up to 42,000 people inBenidorm.
She was dressed in the height of fashion .
The hip-hugging black and white polka-dot dress was the height of fashion.
At its height Bletchley Park employed 12,000 people
I think it's the height of bad manners to be dressed badly
This is the height of hooliganism.