Aminopropionic acid
[医] 丙氨酸
🧩 词语组成解析
🗣️ 情景例句
But I think he was nervous tonight.
但我想他今晚有点紧张。
Thank you for seeing me off.
谢谢你送行。
Please push the ladder against the wall.
请把梯子靠在墙壁上。