Be particularly fastidious about washing your hands before touching food.接触食物前尤其对洗手不能有半点马虎。She was touching the dressing gingerly with both hands.她双手小心翼翼地抚摸着伤口处的绷带。She reached down, touching her toes with opposite hands....
Her story is the touching tale of a wife who stood by the husband she loved...她的经历是一个妻子坚定地支持她深爱着的丈夫的感人故事。The bustling enrolling scene is so attracting and touching.纳新场上的熙攘,美丽而动人.I have a thing about dirty paper money – I...
亚胺基杂环丙烷季铵盐的阳离子,一定是按协同反应的方式开环的.The aziridinium ions must all be opened by a concerted process.阳离子表面活性剂通常为季铵盐类.Cationics are usually quaternary ammomium salts.反 离子通常是钠, 钾和铵.The usual counter - ions are sodium, potassium an...