envelope
['envələup]
n. 信封，封皮；[生]包膜；[天]包层；[数]包迹
同义词
参考例子
1.Can I use this envelope?
用这个信封可以吗？
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。
英文解释
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
网络释义
envelope
信封; 包络; 信封,信套; 外壳;
convective envelope
对流包层; 对流层; 对琉包层;
Commemorative Envelope
纪念封;
envelope machine
信封制造机; 制信封机; 主要用途;
envelope conformation
信封（型）构象; 信封[型]构象;