单词	operation signs
释义	operation signs 营运标志
随便看	be on ice be on intimate terms be on intimate terms with be on it be on its course be on its last legs be on leave be on line be on loan be on location be only skin and bone be only skin and bones be on nodding terms be on oath be on one's back be on one's best behaviour be on one's dignity be on one's ear be on one's feet be on one's game be on one's good behavior be on one's good behaviour be on one's guard be on one's high horse be on one's hind legs 忤者死艰屦忧嗟又经时忧心耿耿忧患凋零忧愁风雨忧愁风雨忧端齐终南忧虞何时毕忧蚕桑之费也快刀断其头心搏心暖まる心暖マル心有る心有ル心服心木心材心根心棒