outer-shell

英 ['aʊtərʃ'el] 美 ['aʊtərʃ'el]

• adj. 外壳的
• n. 外壳

例句

用作形容词 (adj.)

1. These organisms have enzymes that contribute to the weakening and penetration of the protective outer skin.
   这些微生物具有可以减弱和穿透果蔬保护性外壳的酶。
2. A microphone inside each muff senses sound waves that make it through the outer ear cup, and a speaker creates pressure waves that cancel them.
   耳机罩内的麦克风负责感应传入耳机外壳的声波，喇叭负责制造压力波予以抵消。

用作名词 (n.)

1. The turtle has a very hard shell.
   乌龟有很坚硬的外壳。
2. Its thin outer shell had protected its liquid interior.
   它薄薄的外壳保护着它呈液体的内脏。