词汇“be present”的中英文读音、翻译、用法及例句

词汇	be present
释义	请查阅词条：present
随便看	air release valve air shut off valve airstart boundary air punch air relief air pump plunger rod air shutoff valve air starting bottle air punches air space air-roasting air-sea temperature difference airspace air relief cock air-punching air speed metre air pressure head air shutter lever air-releasing mechanism air rock drill air seismology air relief shaft air shutter air relief elbow air source truck