Lactofil
合成蛋白质纤维
🗣️ 情景例句
Her enthusiasm died away.
她的热情逐渐消失了。
A penny saved is a penny earned(or gained).
省钱就是赚钱。
Was the noise a cause of the illness, or were the complaints about noise merely a symptom?
是噪音引起了（精神）病呢，还是（精神）病的症状之一是对噪音的抱怨？