🧩 词语组成解析
[医] 钴(27号元素)
🗣️ 情景例句
and replaces it with a new glove
用一个新的手套来换它
Old wood is best to burn, old horse to ride.
老柴好烧，老马好骑。
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。