Leucoflavin
无色核黄素
🗣️ 情景例句
George Washington sat at that desk
George Washington曾坐在那
I'm a graduate of Yale University, I have a Doctor of philosophy degree.
我是耶鲁大学的毕业生，我有哲学博士学位。
A young man sees a sunset and, unable to understand or to express the emotion that it rouses in him,
一个年轻人看到日落，由于无法理解和表达日落在他心中唤起的激情，