Nonresponse
无反应, 无感应
🗣️ 情景例句
Hi, Robbie.
嗨， Robbie。
Beloved son.
被宠爱的儿子。
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。