Postmarks
n. （信件或包裹上的）邮戳( postmark的复数形式 )
🗣️ 情景例句
How do you do?
你好！
Money burns a hole in his pocket.
钱到袋里留不住。
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。