短語詞組短語Pin -down Screen 外切后后撤步跳投Pin Sb Down 使某人做出承諾pin them down 壓制他們pin someone down 搞清楚Pin Me Down 表演者Pin n down 確定pin n down to 下結(jié)論Pin Down the Causes 確定原因pin down to 使受約束 返回 pin down