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icicle  | 
        
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n. 冰柱,冰垂 pendent spear of ice formed by the freezing of dripping water An icicle is a spike of ice formed when water dripping or falling from another object freezes.  | 
        
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identical  | 
        
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a. 同一的,完全相同的 duplicate; alike; being the exact same one This is the identical room we stayed in before.  | 
        
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identification  | 
        
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n. 辨认,鉴定 act of designating or identifying something;  condition of having your identity established The thief's identification was followed quickly by his arrest.  | 
        
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idiomatic  | 
        
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a. 惯用的,通顺的 having the nature of an idiom; characteristic of a given language It is a reference to 2733 English idioms and idiomatic expressions with definitions.  | 
        
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idyllic  | 
        
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a. 田园诗的 excellent and delightful in all respects That place is an idyllic spot for a picnic.  | 
        
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igneous  | 
        
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a. (地理)火的,火成的 produced under conditions involving intense heat Igneous rock is a rock formed by solidification from a molten state.  | 
        
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ignite  | 
        
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v. 点燃 kindle; cause to start burning; set fire to A nuclear-armed Iran would ignite a nuclear arms race in the Middle East.  | 
        
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ignorance  | 
        
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n. 无知,不了解 lack of knowledge or education Do you think that her ignorance is a reasonable argument for this failure?  | 
        
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ignorant  | 
        
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a. 无知的,不了解的 lacking education or knowledge; unaware And what an ignorant little girl she'll think me for the asking!  | 
        
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illegible  | 
        
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a. 难辨认的,字迹模糊的 incapable of being read; unclear; not legible No one likes his illegible handwriting.  | 
        
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illusion  | 
        
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n. 幻觉 misleading vision; being deceived by a false perception or belief Puncturing this illusion is the key to winning the battle of ideas.  |