light是什么意思？

You are probably well enough to take a little light exercise.

你恢复得不错，大概可以做些轻微的运动了。

Recent research has thrown new light on the causes of the disease.

最近的`研究可以使人进一步了解导致这种疾病的原因。

He came up to me and asked for a light.

他走到我跟前来借火。

The lights changed to red before I could get across.

我还没来得及通过，红灯又亮了。

In the light of later events the decision was proved right.

从后来发生的事看，这一决定证明是正确的。