joined等于什么词组

等于词组take part in，例如：

1、The officer refused to let his men take part in the operation.这军官拒绝让他的士兵参加这项军事行动。

2、Six theatre companies have been selected to take part in this year's festival.已选定六个剧团参加今年的戏剧节。

3、You don't need strength to take part in this sport.参加这项运动不需要太多体力。

Join，参加加入，等于be in这个词组，例如，They are in the football club，等同于they join the football club