Reading in a poor light taxes the eyes.

在暗淡的光线下看书很累眼睛。

The lead content gives terneplate a dull appearance, a noncorrosive surface, and solderability.

铅的融入使镀铅锡钢板具有暗淡的、腐性的表面和可焊接性。

Dark patches in the Milky Way are really clouds of dust cutting out the light from the stars.The most famous one is called "The Coalsack".

[银河的暗淡份其实是阻隔了可见光的星际尘埃，当名的是暗黑星云「煤袋」。