Pyrogallolphthalein
[医] 焦没食子酞(一种指示剂)
🗣️ 情景例句
I was elected the student body president at my college.
我被选为校学生会主席。
The worth of a thing is best known by the want of it.
物以稀为贵。
when he knew that he was dying, he made me promise to go on my own.
他知道自己已奄奄一息，于是他要我答应一定单独回故乡一趟。