The family came over in the ark.这一姓氏可以上溯到方舟时代.It cost about 65 cents a month to subscribe to the Pine Bluff , Ark ., Commercial.他每月花约6角5分订阅阿肯色州 恩布拉夫 出版的《商业》报.Deerslayer made the best dispositions he could to keep the ark...
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...
Recent studies suggested that erythromycin may be effective in prophylaxis against pertussis in exposed, susceptible persons.最近的研究提示,红霉素对暴露于百日咳的易感者,在预防上有效.Whooping cough is a serious respiratory disease caused by Bordete...