Leucoflavin
無色核黃素
??? 情景例句
Where are your manners?
你的規矩哪里去了？
She was so stunned, that she couldn't speak.
她驚愕得說不出話來。
Winter was coming on and the hills threatened the surrounding villages with destruction, for heavy rain would not only wash away the soil but would cause serious floods as well.
冬季即將來臨，這些山丘對周圍的村莊具有毀滅性的威脅，因為大雨不僅會沖走土壤，而且還會引起嚴重的水災。