Phosphatidalcholine
缩醛磷脂酰胆碱
🗣️ 情景例句
I find that hard to swallow.
对这一点我难一相信。
Did the chicken come before the egg?
先有鸡还是先有蛋？
Why don't you borrow some? Do you have a friend who might lend you some?
那为什么不去借点首饰呢？你有没有朋友可以借给你首饰呢？