常见例句An opening, especially to a cavity or passage of the body; a mouth or vent.通气口一个开口，特别是身体上的洞口或通路; 嘴或者通气口I have a toothache because there is a cavity in one of my teeth.我牙疼，因为我的一颗牙齿上有个洞。 返回 cavitis