Tfa
[医][=tissue factor activity]组织因子活性
🗣️ 情景例句
like we always thought I would.
就像我们一向认定的那样。
Best wishes to you both.
祝你们俩无比幸福！
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。