短语词组短語off f and on 斷斷續續;不時地;斷斷續續地;間歇地off and on time 開關次數Just Off And On 衹斷斷續續;就是持續持斷off and on manner 斷斷續續Written Off And On 核銷及stand off and on 一忽兒接近海岸;一會兒接近海岸一會兒遠離海岸航駛off and on times 開關次數 返回 off and on