They stood together on the stoop and rang the bell.他们一起站在门廊上按响了门铃。They will stoop to every low-down trick.他们什么卑劣的手段都使得出来。I wish singing on the stoop didn't use up so much of a man's wind!我但愿弯着腰唱歌,不费这么大的气力才好.I r...
Potassium Chlorate: White powders, salty, it can soluble in water.氯酸钾: 白色粉末, 味咸, 可溶于水.Modified polymerized sulphate flocculating agent was made with ferrous sulphate heptahydrate, sulphate acid, natrium chlorate etc.以七水硫...
这四枚新邮票是为了纪念英国天文协会成立100周年而发行的。The four new stamps mark the 100th anniversary of the British Astronomical Association.在历史的年代数目和天文年代数目之间存在差别.There are differences between historical and astronomical numbering of years.数学材料是...
使用保险套能够有效防止性病及艾滋病的传播.Condoms can protect against AIDS and other sexually - transmitted diseases.每次保险套都带有颗粒状的!Be sure to cover what contain grain condition every time!使用保险套能够减少感染HPV的风险 吗 ?Do condoms reduce the risk of HPV...