N , N - dimethyl - 2 - mercapto - nicotinic amide is an important synthetic intermediate for drug and pesticide.二甲基 -2- 巯基烟酰胺是重要的医药和农药中间体.Mercaptobenzothiazole or the mercapto - mix: Which should be in the standard serie...
他表现不错，得了这么高的分数。He did well to get such a good mark.他认为7岁大的学生的测试分数和班级的规模有关系。He suggested a link between class size and test results of seven-year-olds.合格分数设定为百分制的50分。The pass mark is set at 50 per cent....
Her face showed her dejection at missing the party.她因错过聚会而面露懊丧之色.especially with regard to pleasure or dejection尤其指喜怒哀乐He went away in dejection.他灰溜溜地走了.There was a slight air of dejection about her.她看上去稍微有点儿沮丧。...