Polysomnograph
多导睡眠图
🗣️ 情景例句
She was a beauty in her day.
她年轻的时候是个美人儿。
Lifeless, faultless.
只有死人才不会犯错误。
This is because they had no natural enemies until the arrival of humans and therefore did not need to develop flying wings.
这是因为人类到达这里之前，这些鸟没有天敌，因此，它们不需要发育飞行的翅膀。