单词	beast of burden
释义	beast of burden noun phrase : an animal employed to carry heavy loads or to perform other heavy work (such as pulling a plow) Word History First Known Use 1740, in the meaning defined above
随便看	serranids serrano serranoid serranoids serranos serrans Serranus serranuses serranusses serras serrasalmi serrasalmo serrasalmos Serrasalmus serrasalmuses serrasalmusses serrate serrate-ciliate serrate-dentate serrated serrated impulse serrater serrates serratest serrati

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