Usually pays attention the personal hygiene the dietetic hygiene, also prevents the pneumococcus disease's efficacious device.平时注意个人卫生,饮食卫生, 也是预防肺炎球菌疾病的有效方法.Qingdao is a resort efficacious for a variety of bodily il...
米克既固执又专横，脾气还很坏。Mick was stubborn and domineering with a very bad temper.她脾气变得更坏，对他的依赖更重了。She had grown ever more peevishly dependent on him.尼克出现头痛时脾气就变得很差，甚至还会动粗。When his headaches developed Nick became bad-tempered and ...
She burst into the room with her usual ebullience, and immediately start talking to everyone.她像往常一样兴高采烈地冲进了房间，立刻跟大家攀谈起来。She burst into the room with her usual ebullience.她像往常一样兴高采烈地冲进了房间。His natural ebullience began to r...
了解三氯 乙醛 的毒性和致突变作用.Acute toxicity test , mutation test and single - cell gel electrophoresis ( SCGE ) were used.三氯乙醛是无色挥发性的液体,带有刺激性很强的气味,在97.7℃沸腾.Chloral is a colorless, volatile liquid with a very penetrating odor and bo...