Nitrum
[化] 天然碱
🗣️ 情景例句
It was so nice meeting you, Mr. Stewart.
很高兴遇见你， Stewart先生。
How long have you had this pain?
疼痛多久了？
It was his job to repair bicycles and at that time he used to work fourteen hours a day.
他那时的工作是修理自行车，并且通常是一天工作14个小时。