Exchanges
n. 交易所,票据交换总额；市场, 外币兑换（exchange 复数形式）
🗣️ 情景例句
I was counting on more.
我期待着会比这要要。
Do you live 1st Avenue?
你在第一大道居住吗？
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。