Methylmalonic acid
[化] 异丁二酸; 甲基丙二酸
🧩 词语组成解析
🗣️ 情景例句
How long does it take you to get through a letter?
你写一封信要花多少时间？
Why are you here?
你怎么会在这里？
At last firemen have put out a big forest fire in California.
消防队员们终于扑灭了加利福尼亚的一场森林大火。