Leucoflavin
无色核黄素
🗣️ 情景例句
Our teacher drills us in English.
我们老师让我们反复操练英语。
First come, first served.
捷足先登。
He wrote about socialism in newspapers and started a magazine called Indian Opinion.
他在报纸上撰文报导社会主义并且创办了一份叫做《印度之声》的杂志。