Stegnobinone
二氫三甲基甲氧丁基吡喃酮
??? 情景例句
May I speak to Miss Tan, please?
可以請(qǐng)譚小姐聽(tīng)電話(huà)嗎？
I learned grammar this afternoon.
我今天下午學(xué)語(yǔ)法。
Do you usually buy in large quantities?
你們的訂購(gòu)量通常都很大嗎？