Pentynoic acid
[化] 戊炔酸
🧩 词语组成解析
🗣️ 情景例句
And I could do the selling and the pricing at the boutique.
而我在时装店里负责销售和标价。
How many yards are you going to get?
你要取几码？
Each day is a holiday,and ordinary holidays, when they come,
每天都是假日，而通常的假期到来时，