“Lip sync”是“lip synchronization”的缩写形式，指“to move the lips in synchronization with recorded speech or song”（口型与“原声大碟”同步），sync/ syn
实用场景例句
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Moxy's best trick is that he can lip sync automatically.
莫西最擅长的把戏就是可以自动地对口型.
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He can lip sync but can't talk.
他能够对口型却仍不会说话.
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英英释义
Noun
1. combining audio and video recording in such a way that the sound is perfectly synchronized with the action that produced it; especially synchronizing the movements of a speaker's lips with the sound of his speech