The water pump has a special filter to remove salt from the sea water.

这种水泵有一个特殊的过滤器来去除海水中的盐分。

There is only one way to safely look directly at the sun when it is partially eclipsed, and that is through a special solar filter.

日偏食时，只有一种方法能安全地直视太阳，就是通过特殊的太阳滤光片。

The American Astronomical Society also suggests watching the eclipse indirectly through a pinhole projector, or through binoculars or a telescope fitted with special solar filters.

美国天文学会还建议通过针孔投影仪间接观看日食，或者使用配备了特殊太阳滤镜的双筒望远镜或望远镜。

Viewing it through a camera, binoculars, or telescope, without making use of a special filter for the sun can cause severe eye injury, experts say.

专家说，通过相机、双筒望远镜（即望远镜）看太阳，而不使用特殊的太阳滤光片，可能会导致严重的眼睛损伤。