As sadeq jafari switched on his electric piano , his students shunted their wheelchairs enthusiastically around him to rehearse new songs .
当萨迪克贾法里开启他的电子钢琴,他那些坐在轮椅上的学生们迅速围聚到他周围,开始排练新歌。
They say nato should conduct more visible exercises to rehearse the response to threats at home , and improve the ability of bases and ports to receive nato reinforcements .