Leuceine
[医] 脱氢亮氨酸
🗣️ 情景例句
But Christmas is the most important holiday of the year.
但是圣诞节是一年当中最重要的节日。
The surest way to be happy is to be busy.
要快乐，最可靠的办法是忙碌。
How do you know?
你怎么知道？