sign up for的近义短语
近义短语是take part in ，意思是参加，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...