For lots of animals, including humans, those lungs come with a bunch of other equipment, like protective ribs, a stiff trachea, and in mammals a strong diaphragm. And together, they form your respiratory system.

对于包括人类在内的许多动物来说，这些肺配有一堆其他设备，比如保护肋骨、坚硬的气管，哺乳动物有一个强壮的横膈膜。它们一起形成了你的呼吸系统。