🧩 词语组成解析
genus
['dʒi:nəs]
n. (动植物的)属;类;种;型;
un. 〔动〕达摩金梭鱼\\n
🗣️ 情景例句
OK.
好的。
Poli-sci major
专攻政治社会学
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。