rash/rashness/rashly
rashⅠ/ræʃ/n.［c］&［u］1.（皮）疹子；发疹：a heat rash熟疹；nettle rash麻疹If a rash appears, the child may have(the)measles.如果有一片红斑出现，这孩子可能出疹子。I’ve got ···
rat
rat/ræt/n.［c］鼠：Rats carry disease.老鼠传染疾病。I think we’ve got rats (= there are rats in our house).我觉得我们遭鼠了。
rate
rate/reit/ I.n.1. (只用sing.)率，比率，速度：the rate of exchange兑换率；walk at the rate of 3 miles an hour以每小时3英里的速度走路［考句］Recycling wastes slows down the rate at w···
rather
rather/ˈrɑ:ðə/adv.1.相当，十分，有点儿：He wore a rather shabby coat.他穿一件相当破旧的上衣。You’ve done rather well.你干得十分好。［注］不定冠词有时可放在rather后面：She had ···
ratification/ratify
ratification/ˌrætifiˈkeiʃən/n. [u]正式批准，认可：The treaty is awaiting ratification.条约正等待批准。Opinion polls indicated a two-thirds majority in favour of ratification o···
rating
rating/ˈreitiŋ/n.［c］1.等级，品级，评定结果: a credit rating信用等级；win high ratings in the examinations考试取得高分2.(pl.)(电视节目的)收视率，(广播节目的)收听率：This song ha···
ratio
ratio/ˈreiʃiəu/n.［c］比，比率：the direct/inverse ratio正(反)比；the ratio between industry and agriculture工业与农业的比率The population contains a very high ratio of old peop···
ration
ration/ˈræʃən/ I.n.［c］食物定量：ration card定量供应卡The country cut the bread ration last year.那个国家去年削减面包配给量。‖II.vt.对…进行配给：We were rationed to two eggs···
rational
rational/ˈræʃənl/adj.1.理性的：rational knowledge理性认识Man is a rational animal.人是有理性的动物。2.合理的：a rational act合理的行为；a rational explanation合理的解释
