Envelope plane
[计] 包络面
🧩 词语组成解析
envelope
['envələʊp]
n. 信封，封皮;壳层，外壳;包裹物;[生物学]膜，包袋;
en 表示\"进入…之中，包围\" +velop =cover（盖上） +e → .信封, 封套, 封袋, [天]包层, [数]包迹, [生]包膜
🗣️ 情景例句
Do you have anything that must be claimed?
难道你没需要申报的东西吗？
Which one is Mr. Jame's office?
哪间是詹姆司先生的办公室？
To our dismay, we saw that there were snails everywhere:
让人沮丧的是，我们发现到处都是蜗牛：