involve/involvement/involved
involve/inˈvɔlv/vt.1.牵涉，牵连：The problem involves us all.这个问题牵涉到我们大家。Don’t involve me in your quarrel.你们吵架不要把我扯进去。［考句］There has been a collision ···
inward
inward/ˈinwəd/ I.adj.向里的，内心的：The explorers discovered an inward passage.勘探者发现了一个往里的通道。He has achieved inward peace.他内心获得平衡。‖II.adv.(亦可作inwards)向···
iron
iron/ˈaiən/ I.n.1.［u］铁: cast iron铸铁；an iron will坚强的意志；a man of iron铁汉Strike while the iron is hot.趁热打铁，趁好机会。2.［c］熨斗：an electric iron电熨斗‖II.vt.&am···
ironically
ironically/aiˈrɔnikəli/adv.说反话地，讽刺地；出乎意料地：She smiled ironically.她嘲讽地一笑。Ironically, the rescue craft which saved her was the boat she was helping to pay for···
irony
irony/ˈaiərəni/n.［c］&［u］反语，冷嘲：a biting irony辛辣的讽刺；a fine irony巧妙的反话；a quiet irony暗中的讽刺；by the irony of fate由于命运的嘲弄
irrational
irrational/iˈræʃənəl/adj.无理性的，失去理性的：an irrational function无理函数After taking the drug she became completely irrational.她在吸毒后变得完全失去了理性。
irregular/irregularity
irregular/iˈreɡjulə/adj.不规则的：an irregular airliner不定期航班；an irregular verb不规则动词He visits us at irregular intervals.他不定期地来探访我们。irregularity/iˌreɡjuˈl···
irreplaceable
irreplaceable/iˈrepleisəbl/adj.不能替代的：［考句］Most people tend to think they are so efficient at their job that they are irreplaceable.许多人认为自己的工作效率高，其他人无法···
irrespective
irrespective/ˌiriˈspektiv/adj.(和of连用)不管，不论，不顾：irrespective of the cost不管值多少All pupils irrespective of age, are invited to join the club.所有学生不论年龄多大都被邀···
irrigate/irrigation
irrigate/ˈiriɡeit/vt. 1.灌溉：They have built canals to irrigate the desert.他们建造成水渠以灌溉沙漠。2.（医生）冲洗伤口：irrigate one's nose and throat with hot water用热水冲···
