Envelop curve
[经] 包络曲线
🧩 词语组成解析
envelop
[in'veləp]
vt. 包围，包住;笼罩，遮盖;
curve
[kɝv]
n. 弧线，曲线;曲线状物;弯曲物;[棒]曲线板;
vt. 使弯曲;使成曲线;使成弧形;
vi. 弯曲;弯成曲线，弯成弧形;沿曲线行进;
adj. 弯曲的;曲线形的;
🗣️ 情景例句
I would like to send this by registered mail, please.
我想把这封信挂号寄出。
Older and wiser.
越老越聪明。
I'm not sure we can use that many.
我怕我们用不了那么多。