此书对营养学有很大贡献。This book makes a significant contribution to dietetics.人们普遍认为他是营养学方面的著名权威.He was widely regarded as a leading authority on nutrition.我们需要振兴人类营养学研究.We need to revitalize human nutritional research....
It is undeniable that the economic picture is brightening.不可否认经济状况正在好转。"Oh, we'd love to!" cried Nancy, her face brightening.“哦，我们很乐意！”南希面露喜色，大声说道。" All right,'said Drouet, brightening.“ 好的, "杜洛埃说, 又快活起来....