Dark feather covered my eyes , i cachinnated and walked away after a while , with singing a reqiuem softly.
黑色的羽毛盖上了我的眼睛，我突然大笑，过了一会儿我哼著安魂曲离开。
A feather is light what is light cannot be dark; therefore a feather cannot be dark.
羽毛很轻，它就不会黑，因此羽毛不黑。
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。
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