Phosphatidalcholine
缩醛磷脂酰胆碱
🗣️ 情景例句
Hi.
嗨！
All are brave when the enemy flies.
敌人逃跑时，个个都勇敢。
John works in a factory about ten kilometres from his home.
约翰在一家距离他家大约 10公里远的工厂工作。