或者，如果天气晴朗，你可以测量气压计的高度，然后把它立于地面，再测量它的影子的长度。

Or if the sun is shining you could measure the height of the barometer, then set it on end and measure the length of its shadow.

youdao

绳子的长度加上气压计的长度，就等于该摩天大楼的高度。

The length of the string plus the length of the barometer will equal the height of the building.

youdao

但是该装置利用气压计来测量高度。

But the device USES a barometer to estimate height.

youdao