Budgets
n. 预算（budget复数形式）
🗣️ 情景例句
Well, what do you want to do?
那你想干什么？
What is wrong?
有什么不对吗？
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。