In the first case it means light as a feather, weight wise and in the second case we're talking about light as opposed to dark. So that's the fallacy of equivocation.

第一句中是指羽毛很轻，在重量方面的，第二句是，与黑相对的亮，这就是模糊谬论。

youdao

If this is not the case the black weight will look optically too small when it's combined with the light weight in a line of text.

否则，当粗黑体和细线体在同一行中连排时，粗黑体看上去就要比细线体要小得多。

youdao

As is the case with those other mechanisms, WS-Inspection documents are very light-weight, easy to construct, and easy to maintain.

如同其它机制一样，WS - Inspection文档是非常轻量级的，易于构造，易于维护。

youdao

For times when you don't need a rugged case, the Armor includes a silver trim bumper to make it a slim, light weight case.

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It offers the full protection of a hard-shell case with an ultra-thin, light-weight, low-profile design.

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