Pyruvic
丙酮酸的
🗣️ 情景例句
I've got it. This one's on me.
我都付了。这一顿我请客。
Who is the auther of this essay?
谁是这论文的作者？
Who was first? Who was second? Who was third?
谁是第一？谁是第二？谁是第三？