Lactamine
丙氨酸
🗣️ 情景例句
Did you know I can type almost 60 words per minuter?
你知道吗，我能每分钟打60个字。
Children learn to creep ere they can go.
孩子要走路，先得学爬行。
The next stage is to get the elephant to the training establishment,
下一步就是把象带到训练场所，