Mononitrate
一硝酸盐
🗣️ 情景例句
What?
什么？
It is too late to lock the stable door when the steed is stolen.
贼出关门。
It was the last day of the year and a large crowd of people had gathered under the Town Hall clock.
那是一年的最后一天，一大群人聚集在市政厅的大钟下面。