You're gonna see silk in formal clothes, typically women's clothes but also men might have a silk tie or something like that.

你会看到正装中使用丝绸，通常是女装，但男人也可能有丝绸领带或类似的东西。

" You never can, dear. But I can. You are jealous of Cecil because he may stop Lucy knitting you silk ties" .

“你永远做不到， 亲爱的。但我可以。你嫉妒塞西尔， 因为他可能会阻止露西给你织丝绸领带” 。