异口同声地，齐声...

The teacher told them to act in concert with one another.老师告诉他们行动要一致.Although they did not consider themselves unionized, they did act in concert.虽然他们并不认为自己加入了工会, 但他们的确采取统一行动.They did not act in concert with one another....

in concert的音标：in concert的英式发音音标为：[in 'kɔnsət]in concert的美式发音音标为：[ɪn 'kɑnˌsɚt]...