Perfluoroamine
全氟胺
🗣️ 情景例句
I was very sad indeed to hear about it.
听了这件事，我的确非常难过。
Mother's apple pie always tastes delicious.
妈妈做的苹果派很好吃的！
When one seriously studies the social orders that have had the opportunity to develop autonomously,
当一个人认真地研究自发形成的社会秩序时，