高山动物如何在稀薄空气中生活
A small mouse lives high in the mountains, far above most trees. The air there has much less oxygen than the air near the sea.
For many mammals, this would make moving and staying warm very hard. The mouse has a body that uses oxygen carefully, so its muscles can keep working.
Inspired by a public Scientific American title/summary · Rewritten by Vocabsavvy · Vocabsavvy Original (public-snippet inspired)