Polyampholyte
聚两性电解质
🗣️ 情景例句
I am studying two majors, and it's quite a burden on my time.
我有两门主修课，这占据了我很大一部分时间。
A disease known is half cured.
病情确诊断，治病好一半。
Then Han Meimei came in.
接着韩梅梅走了进来。