Envelops
n. 包络线；信封（envelop的复数）
🗣️ 情景例句
You handed them to me.
你将它们给了我。
Is it yours?
它是你的吗？
The city at one time must have been prosperous, for it enjoyed a high level of civilization.
这座古城肯定一度很繁荣，因为它曾享有高度的文明，