Hexoketone
己酮-(2)
🗣️ 情景例句
Keep a small English dictionary with you at all time.
随身携带一本小英文字典。
Are you a native Chinese?
你是土生土长的中国人吗？
Has your company done any research in this field?
请问贵公司对此范畴做了任何研究吗？