词汇	机内扬声器
释义	机内扬声器 on-board speaker
随便看	Registering at an employment agency registering balloon registering callipers registering capacity registering chronograph registering chronometer registering control points registeringcounting registering court registering device registering devices for cranes registering drum registering elapsed TIME registering equipment registering frame registering hole registering, indicating registering, indicating, recorder registering instrument registering mark registering mechanism registering micrometer REGISTERING of computed values in general REGISTERING of measured values in general REGISTERING of passage of vehicles on railways