单词	crustacean
释义	crustaceancrustacean /krʌˈsteɪʃən/ noun [countable] Etymology ETYMOLOGYcrustacean Origin: 1800-1900 Modern Latin crustaceus, from Latin crusta; ➔ CRUST science, biology an animal such as a lobster or a crab that has a hard outer shell and several pairs of legs, and usually lives in water—crustacean adjective
随便看	threshing machine threshold threw thrice thrift thriftily thriftiness thrift shop thrifty thrill thrilled thriller thrilling thrillingly thrive thriving throat throatily throatiness throaty throb throbbing throes thrombosis throne

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