短语词组短语water seal trap 水封圈闭water r trap 聚水器water set trap 装于水中的夹子Water knockout trap series 分水器系列water -trap stomach 幽门高位胃;翻译water tray trap 水盆诱捕器water phase trap 水相圈闭water knockout trap [油气]分水器sink water trap 洗涤盆存水弯 返回 water trap