Vitamin k-s
[化] 甲萘醌巯丙酸; 2-巯丙酸维生素K-3
🧩 词语组成解析
🗣️ 情景例句
Yes, quite good. How about a game sometime?
是的，非常好，什么时候来场比赛怎样？
That man is a teacher,isn't he?
那个人是位教员，对不对？
Stop making such a noise.
别吵了。