生效的，有效的，大批地，大规模地...

Police are out in force to prevent a recurrence of the violence.警方出动大量警力防止暴力事件再次发生。A twelve hour night time curfew is in force.正在执行12小时的宵禁。The enemy is in force behind the hill.敌人在山后集结了大量兵力....

in force的音标：in force的英式发音音标为：[in fɔ:s]in force的美式发音音标为：[ɪn fɔrs]...

（同…）联合，并力，会师，合力...

They cannot join forces to vote her out of office.他们不能联合起来通过投票表决让她下台。Then they headed north to join forces with us.这时他们向北进发去和我们会师.Let us join forces to fight them.让我们联合起来跟他们斗....

join forces的音标：...