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| A: How can your camera take picture in the dark? 
 B: It has an infrared light to help it focus.
 
 infrared a. 红外线的
 
 A: The roads and railways in my country are terrible.
 
 B: Yes, the government needs to develop the infrastructure.
 
 infrastructure n. 基础结构,基础设施
 
 A: I think I will take the day off work>
 
 B: What an ingenious idea!
 
 ingenious a. 1. (物件等)设计独特的,(方法等)别致的,巧妙的;2. (人,头脑)灵巧的,关于创造发明的
 
 A: Di VInchi was a painter and designer of great ingenuity.
 
 B: Yes, he was certainly very talented.
 
 ingenuity n. 独创性,巧妙
 
 A: I would love to inhabit a small tropical island.
 
 B: Alone? Would you not get lonely?
 
 inhabit vt. 居住于,(动物)栖居于
 
 A: Please inhale the sweet fragrance from the flowers.
 
 B: Sorry, my nose is blocked.
 
 inhale v. 吸入(气体等),吸(烟)
 
 A: There are certain facts inherent in the situation that I am unable to understand.
 
 B: Perhaps you need to spend some more time thinking about it then.
 
 inherent a. (in) 内在的,固有的,生来就有的
 
 A: I was inhibited form entering the building.
 
 B: Why were there barriers in your way?
 
 inhibit vt. 阻止,妨碍,抑制
 
 A: I’d like to initiate a new project.
 
 B: Sounds exciting, what are your plans?
 
 initiate vt. 1. 开始,创始,发起;2. 使初步了解;3. 接纳(新成员),让……加入
 
 n. 新加入组织的人
 
 A: I had to have the medicine injected directly into my veins.
 
 B: Ouch! That sounds painful!
 
 inject vt. 1. 注射(药液等),给……注射;2. 注入,引入,投入
 
 A: Do you live by the coast?
 
 B: No, I live inland, about five hours from the sea.
 
 inland a. 内地的,内陆的
 
 ad. 在内地(或内陆),向内地(或内陆)
 
 A: let’s go for a picnic.
 
 B: Good idea, I know a small inlet where we spend the afternoon.
 
 inlet n. 1. 水湾,小湾;2. 进口,入口
 
 A: The prison inmates were protesting because of their living conditions.
 
 B: Yes, the prisoners have a hard time.
 
 inmate n. (狱中的)囚徒,(精神病院等中的)被收容者
 
 A: You are such a good pianist, it must be innate.
 
 B: No, the prisoners have a hard time.
 
 innate n. 天生的,固有的,天赋的
 
 A: I’m going to an exhibition of modern innovations this afternoon.
 
 B: Oh, can I come? I’m fascinated by new inventions.
 
 innovation n. 1. 新方法,新事物;2. 革新,创新
 
 A: There are innumerable reasons why I can’t marry you.
 
 B: Surely there can not be that many .
 
 innumerable a. 无数的,数不清的
 
 
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