envelope
- n. 信封，封皮；包膜；[天] 包层；包迹
考试真题
- When a tree first starts growing in a certain area, it's likely that the 27 climatic envelope—the temperature, humidity, rainfall patterns and so on—suits it.
2016年12月六级真题（第一套）阅读 Section A
- A woman excused the interruption and handed me an envelope.
2017年高考英语全国卷2 完形填空 原文
- Further up, the weather changes— low clouds envelope the mountainsides, which are covered with thick grass.
2019年高考英语全国卷I 完形填空 原文
- Now think of your laptop, thinner than a brown-paper envelope, or your cellphone in the palm of your hand.
出自-2012年考研阅读原文