Vitamin B assists in red-blood-cell regeneration.维生素B可以促进红细胞再生。This chemical assists in construction of muscle, bone and other tissues.这种化学物质有助于建造肌肉 、 骨骼和其它组织.The congregation assists at divine service.会众参加圣礼....
P - methoxybenzeneacetonitrile was prepared in 34.8 % yield starting from anisole, via chloromethylation, cyanogenation and fractional distillation.以苯甲醚为原料,经过氯甲基化, 氰化反应后, 通过精馏获得对甲氧基苯乙腈,总收率为34.8%....
被拘留者的关押环境常常恶劣严酷、很不人道。The detainees are often held in cruel and inhuman conditions.他找到了懂得用狂欢来冲淡战争的严酷的志趣相投的军官。He found congenial officers who knew how to leaven war's rigours with riotous enjoyment.你太相信别人了, 严酷的现实是并不是每...