🧩 词语组成解析
genus
['dʒi:nəs]
n. （动植物的）属;类;种;型;
岩蕨属
🗣️ 情景例句
I'd miss them a lot,
我会非常想念他们的，
I'm two years younger than my sister.
我比我姐小两岁。
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。