Memberships
n. 全体会员( membership的复数形式 ); 会员身份, 会员资格
🗣️ 情景例句
Three things?
三件事？
See you tomorrow.
明天见。
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。