Phosphatidalcholine
缩醛磷脂酰胆碱
🗣️ 情景例句
In the Spring and Autumn period, copper and iron chopsticks came into being.
在春秋时代又出现了铜制和铁制的筷子。
Mike is already a junior.
迈克已经大学三年级了。
While on a walking tour with his wife,
一次，他与妻子徒步旅行。