envelope

名词

1. 1

   信封、封套

   She sealed the envelope and wrote the address on the front.

   她封好信封，在正面写上地址。

2. 2

   外膜、包覆层、外壳

   The seeds are protected by a thin envelope of jelly.

   这些种子外面有一层薄薄的胶质外膜保护。

3. 3

   极限、界限、范围多用于 push the envelope

   The new engine design pushes the envelope of fuel efficiency.

   这款新引擎的设计把燃油效率推向极限。

片语

1. 1

   突破极限、挑战极限

   Their latest album really pushes the envelope of electronic music.

   他们最新的专辑真的突破了电子音乐的极限。

相关片语

• push the envelope