单词	metronome
释义	metronomemetronome /ˈmɛtrəˌnoʊm/ noun [countable] Etymology ETYMOLOGYmetronome Origin: 1800-1900 Greek metron ( ➔ -METER) + -nomos controlling (from nomos law) eng. lang. arts a piece of equipment that shows the speed at which music should be played, by making a short repeated sound
随便看	attack attacker attain attainable attainment attempt attempted attend attendance attendant attendee attention attention deficit disorder attention-deficit hyperactivity disorder attentions attention span attentive attentively attentiveness attenuate attenuated attenuation attest attestation attic

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