Because of a similarity to dance, synchronized swimming(花样游泳)—exhibition swimming in which the movements(插入语中的主语) of one or more swimmers synchronize to a musical accompaniment—is sometimes called water ballet, especially in theatrical situations.
of one or more swimmers synchronize to
of one swimmer or more is synchronized with
of one or more swimmers are(主谓一致) synchronized with
synchronized在這做形容詞 X synchronizes A with B. Longman: 1 [intransitive and transitive] to happen at exactly the same time, or to arrange for two or more actions to happen at exactly the same time synchronize something with something Businesses must synchronize their production choices with consumer choices.