Enthetic
a. 外来的
🗣️ 情景例句
Just try to be patient.
尽量耐心一点。
I ran all the way to school, otherwise I'd have been late.
我一路跑到学校，不然就迟到了。
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。