Chondrosaminicacid
氨基半乳糖酸
🗣️ 情景例句
We were exposed to the latest theories on child care.
我们接触过有关幻儿保育的最新理论。
Please answer the door.
请去开门。
Hello, Wei Hua! Where are you going?
你好，魏华！上哪儿去呀？