Prefractionation
初步分馏
🗣️ 情景例句
Hello, how are you doing today?
你好， 今天怎么样？
How long could the buyer expect your product to last?
购买者期望你们产品的使用期是多久呢？
I could not catch your question. Could you repeat it, please?
我没听清楚你们的问题，你能重复一次吗？