outer-shell的用法和樣例：
例句
用作形容詞 (adj.)
- These organisms have enzymes that contribute to the weakening and penetration of the protective outer skin.
這些微生物具有可以減弱和穿透果蔬保護性外殼的酶。 - 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.
耳機罩內的麥克風(fēng)負責感應傳入耳機外殼的聲波，喇叭負責制造壓力波予以抵消。
用作名詞 (n.)
- The turtle has a very hard shell.
烏龜有很堅硬的外殼。 - Its thin outer shell had protected its liquid interior.
它薄薄的外殼保護著(zhù)它呈液體的內臟。
