I flunked math in second grade.我二年级时数学不及格。He flunked out ( of college ) last year.他去年 ( 从大学 ) 退学了.I'd like to thank the two professors who flunked her.我倒要谢谢那两位给她不及格的先生....
...the natural sugars found in grape juice.葡萄汁中所含的天然糖分 The grape vine climbed up along the wall.葡萄藤沿墙攀缘而上.As for the Earth, watermelon , grape, have a spheroid, Be just some dissimilarities of size.至于地球 、 西瓜 、 葡萄 、 有是个球形...