I
ignore
vt.不理睬, 忽视 1. to refuse to take notice of ; to reject (a bill of indictment) as ungrounded 

imitate
vt.模仿,仿效1.to produce a copy of: REPRODUCE; 2 to follow as a pattern, model, or example 

imperceptible
adj.感觉不到的not perceptible by a sense or by the mind : extremely slight, gradual, or subtle 

increase
vi.增加 to become progressively greater , 繁殖 to multiply by the production of young 

indefinite
adj.模糊的, 不确定的 not definite ; not precise : VAGUE 

indicative
adj.(～ of) 指示的, 预示的, 可表示的 serving to indicate 

induce
vt.劝诱, 促使 to move by persuasion or influence ; 导致, 引起EFFECT, CAUSE 

ingenious
adj.机灵的 showing or calling for intelligence, aptitude, or discernment
有独创性的marked by originality, resourcefulness, and cleverness in conception or execution 

inhibit
v. 抑制 to hold in check : RESTRAIN; 约束: to prohibit from doing something 

insatiable
adj.不知足的, 贪求无厌的 incapable of being satisfied : QUENCHLESS 

inspiring
adj.灌输的, 鼓舞的 having an animating or exalting effect 

insult
n.侮辱, 凌辱 a gross indignity
vt.侮辱, 凌辱 to treat with insolence, indignity, or contempt : AFFRONT; 

intense
adj.强烈的existing in an extreme degree 热情的exhibiting strong feeling of purpose 

intricate
adj.复杂的, 错综的having many complexly interrelating parts or elements : COMPLICATED 难以理解的 difficult to resolve or analyze 

inundate
v.淹没 to cover with a flood : OVERFLOW 

invent
vt.发明, 创造 to produce (as something useful) for the first time