Both Aldrin and Chlordane are valuable insecticides.艾氏剂和氯丹都是重要的杀虫剂.Mercury, polychlorinated biphenyls ( PCBs ) and chlordane are among the major contaminants found in Illinois fish.水银, 多氯联苯和氯丹是在伊利诺依州的鱼类中发现的主要污染物.To explo...
Lamaism is characterized by elaborate rituals and a strong hierarchical organization.喇嘛教的主要特点是仪式讲究,等级森严.The inscription on the stele tells the history of Lamaism.碑文讲的是喇嘛教史.Lamaism has several sects: the Yellow, the Red, ...
N, N - diethylaniline was synthesized under normal tempreture with tetraethyl ammonium hydroxide as phase transfer catalyst.以苯胺和溴乙烷为原料,用四乙基氢氧化铵作相转移催化剂,在常压下合成N, N二乙基苯胺....
他吃早餐时两眼迷糊，宿醉未醒。He appeared at breakfast bleary-eyed and with a hangover.她醒来时宿醉反应很厉害。She woke up with a terrible hangover.强烈的宿醉反应a hangover of Wagnerian proportions...