单词	servomechanism
释义	servomechanism noun ser·​vo·​mech·​a·​nism ˈsər-vō-ˌme-kə-ˌni-zəm  : an automatic device for controlling large amounts of power by means of very small amounts of power and automatically correcting the performance of a mechanism Word History Etymology servo- (in servomotor) + mechanism First Known Use 1926, in the meaning defined above
随便看	half step half stock half story half stuff half sweep half tester bed half the battle half the story half the time half tide half tint half title half twist half uncial half uncle half volley half Wellington half year half-a-crown half-and-half half-and-halfs half-ape half-armor half-ass half-assed

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