B-complex vitamin
【生物化学】维生素 B 复合物[亦作 vitamin B complex]
🧩 词语组成解析
🗣️ 情景例句
That took place right after the First World War, didn't it?
它就发生在第一次世界大战之后，是吗？
Why didn't you do it?
为什么你不做？
The meeting was scheduled for two hours, but it is not over yet.
会议原定了两个小时，不过现在还没有结束。