Annull
v. 使成无效;取消
🗣️ 情景例句
In town. At the hardware store.
在镇上。在五金行里。
Nothing is stolen without hands.
无风不起浪。
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。