Brc
abbr. business reply card 商业回执卡
🗣️ 情景例句
How much do I owe you?
我应付你多少钱？
I agree. I wish it were better.
我也觉得是，希望会好起来。
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。