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fiery/faiəri/adj.火的，火焰的；激烈的，暴躁的：The car was painted a fiery red.车漆成了火红色。She has fiery red hair.她有一头火红的头发。He has a fiery temper.他的脾气暴躁如火。

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fifteen/ˈfifˈti:n/num.十五；十五岁：fifteen minutes of fame昙花一现的荣誉；片刻的风光The sum of seven and eight is fifteen.七加八是十五。She must be fifteen by now.她如今肯定有15···

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fifth/fifθ/num.第五，五分之一：Henry was the fifth person in line.亨利是那一队中的第五个人。Each of the five people had one fifth of the cake.五个人分那块蛋糕，每人分得五分之一。

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fifty/ˈfifti/num.五十：in the fifties在五十年代; in one’s fifties五十多岁I have collected fifty books on space.我已收集了五十本关于太空的书籍。

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fight/fait/ I.vi.&vt.(fought, fought) 1.打仗，斗争，战斗：The boys are fighting.孩子们在打架。In World War Two, England fought with France against Germany.在第二次世界大战中，英···

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figure/ˈfiɡə/ I.n.［c］1.数字：Please add up these figures.请把这些数字加起来。2.体形，身影：I saw a figure in the dark.我看见黑暗中有个人影。The girl has a good/beautiful figur···

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file/fail/ I.n.［c］1.档案，卷宗：to read one’s own personal file读自己的私人档案on file存档：［考句］Thank you for applying for a position with our firm. We do not have any openi···

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fill/fil/vt.&vi.（使）装满，充满，占满：He filled my cup with tea.他给我倒了一杯茶。All the streets were filled with people.所有的街道都挤满了人。A big audience filled the hall···

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film/film/ I.n.1.［c］影片，电影：We saw a good film last week.上周我们看了一部好电影。2.［c］(照相)胶卷：Mike has put a (roll of) colour film into his camera.迈克往照相机里装了一盒···

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filter/ˈfiltə/ I.vt.&vi.过滤(掉): filter water过滤水The solid particles were filtered from the solution.把固体微粒从溶液里过滤出来。‖II.n.［c］过滤器：The lake water passes ···