I let down 1.使失望,不幫助;

　　2.放下,降低 1.disappoint, fail to help :Harry will never let you down.(You can rely upon him to help you always.) 2.Pleast let the window down.She let down her hair. 3.make(clothes) longer: This skirt needs letting down.

　　A let go (of ) 放開,松開 Don't let go (of) the rope /handle.

　　Let me go!(Take your hands off me,don't hold or keep me.)放開你的手,不要拉我,讓我走!

　　E let in / into 讓..進來 There is someone at the door;let them in,will you? Who let you into the building?

　　A let loose 放開,釋放,放松(喻發泄) Don't let that dog loose.

　　A let off 1.原諒,寬恕,從輕處理,免除(工作,責任,約束) ; 1.The police let him off, but warned him not to do it again. You let him off lightly.

　　2.to let off a fireworks放(槍炮,煙火等): The boys were letting off fireworks

　　E let out 1.放出,發出 ;

　　2.放大,放寬 1.He let out a cry of pain.

　　Let the water out of the bathtub.

　　2.=to make (clothes)bigger: She's getting so fat that her trousers need to be let out round the waist(腰).

　　E lie in 1.睡懶覺;

　　2A. 分娩,待產 1=to stay in bed late in the morning; lie-in n: have a nice lie-in on Sunday morning

　　2. The time had come for her to lie in.

　　A in the light of 鑒于,由于 =taking into account;considering:

　　The book was written in the light of the new theory.

　　A throw/cast light on/upon 闡明某事,使人了解某事 =to make clear;explain:

　　Their findings throw some light on what has happened.

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