Davidigenin
二羟苯基羟基丙酮
🗣️ 情景例句
A very good question.
一个非常好的问题。
I wonder if the dentist could fit me in early tomorrow?
请问明天一早牙科医生能抽空给我看一下吗？
But suppose the earth could be covered with sensors spaced one foot apart,
假设地球上可以布满传感器，每个相隔1英尺，