Natrometer
测钠计, 钠量计
🗣️ 情景例句
Four o'clock at the advanced exercise class. With me.
四点钟去高级健身课， 跟我一起。
Never do things by halves.
做事情不要半途而废。
Han Meimei, can I borrow your ruler, please?
韩梅梅，借我你的格尺用一下吧。