Envelops
n. 包络线；信封（envelop的复数）
🗣️ 情景例句
Do you live in New York?
住在纽约吗？
He had to resign, to save face.
为了保全面子，他不得不辞职。
It seems she was in class on Friday afternoon, but no one has seen her since.
好象她星期五还在教室，但从那以后没人看见过她。