Weissite
碲铜矿
🗣️ 情景例句
Not until recently.
最近才考虑到。
I like my doggie.
我喜欢我的小狗。
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。