identical 同一的：the same (very)identical menu

identify 识别，鉴别：He identified the coat as his brother’s

idle 闲散的，闲置的：idle money

ignite点燃，使燃烧：ignite a stove fire with scraps of paper

illuminate 照明，照亮，解释，启发，启迪：The room was poorly illuminated by one candle

illustrate (用图或例子)说明，阐明：A complicated rule can be illustrated by a simple example

immerse 使浸没：He immersed himself in the pool

immune免除的，豁免的：Nobody is immune from criticism

impact 冲击，撞击：the impact of light on the eye

impair 削弱，减少：The output of produce was impaired by the bad weather

impartial 公正的，无偏见的：A judge should be impartial

implement 工具，器具，用具：new types of farm implements

impose 征(税)，加(负担，惩罚等)于(on, upon)：impose additional tax on business expansion

impulse 推动，驱动：give an impulse to the development of the friendly relations between the two countries

inaccessible 达不到的：The two rocks at the top of the steep hill is at first sight inaccessible

incline倾斜：The shaft inclines almost thirty degree

incorporate 包含，吸收：His book incorporates his earlier essays

incur 招致，引起，遭受：incur sb’s displeasure(envy)

indignant 愤怒的，愤慨的：The actress was at the columnist’s personal questions

indispensable 必不可少的，必需的(to. for)： Oxygen is indispensable to life