| 词汇 | chitin |
| 释义 | chitin /`kaɪtɪn/ n. The horny substance that forms finger-nails and toe-nails, and the principal part of the hard outer coat of insects, crustaceans, etc. 几丁质、甲壳质(手足指甲之骨甲质)。 derivatives adj. chitinous. |
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