地平

For some stars both culminations take place above the horizon.

有些星星两个中天都出现在地平之上。

Here we distinguish azimuthal and equatorial mountings as well as fixed and transportable instruments.

比如说有地平式和赤道式装置，有固定式和移动式的等等。

There is an argument to express them in ground level abundance of the respective elements.

有理由把它们用相应元素的地平丰度来表示。

The sun was a huge ball of fire low on the horizon.

落在地平线上的太阳像个大火球。

They vanished into the haze near the horizon.

他们消失在地平线附近的薄雾中。