Envelops
n. 包络线；信封（envelop的复数）
🗣️ 情景例句
I'm going to hire an interior decorator to look the place over.
我要请一个室内装需工程师来看看这个地方。
What's the height of the building?
这座楼有多高？
I've never met him but I've talked to him on the net.
我没见过他，但我和他在网上聊过天。