Abra
n. 磨料；岩洞
🗣️ 情景例句
Sorry, Robbie. Sorry to be late this morning,
对不起， Robbie， 对不起 ，今天早上迟了点，
He was at a loss for words.
他不知道该说什么好。
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。