Lactamic acid
[化] 丙氨酸
🧩 词语组成解析
🗣️ 情景例句
Who is it?
是谁?
Excuse me, how can I get to the bus station?
对不起，汽车站怎么走？
As the parents had five children, life was a perpetual struggle against poverty.
家里已有5个孩子，全家人常年在贫困中挣扎。