2. Please write down your name on this envelope. 请把你的名字写在这个信封上。
3. Can I have an envelope? I want to write to my friend. 我可以要一只信封吗?我想给我的朋友写封信。
英英解释
n.
1. a flat rectangular paper container for papers
2. any wrapper or covering
3. a curve that is tangent to each of a family of curves
4. a natural covering (as by a fluid)
5. the maximum operating capability of a system
6. the bag containing the gas in a balloon