英汉解释

n. 信封，封皮；[生]包膜；[天]包层；[数]包迹

同义词

n. gasbag

参考例句

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

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;