Lactobiose
乳二糖
🗣️ 情景例句
Keep your nose to the grindstone; you'll succeed.
埋头苦干，总有成功的一天。
How do you spell your last name?
你的姓是怎样拼写的？
Towards midday, a girl heard a muffed cry coming from behind on of the walls.
快到中午的时候，一个女售货员听见从一堵墙里传出一种闷声闷气的叫声。