加载中…1 flip
vt.快速翻动，转动.
n.捻掷硬币，轻抛；轻拍，adj.无礼地轻率的，轻浮的
she flip through the pages of a magazine ,not really
concentrating on them.
2 float
v.浮动，漂浮，飘动
the boat floated on the placid of the lake.
3 fluctuate vi
波动，涨落，起伏
with prices fluctuate so much,it is difficult for the school
to plan a budget.
4 flush
vi。脸发红
flush with 齐平的，同高的
his face flush as the
came in after
running all the way from
school.
5 flutter
vi.鸟等振翼，排翅膀，飘动，飘扬，快速跳动n。紧张，激动不安
flags
fluttered on the oval
roof.
6 foam n
泡沫，泡沫材料，泡沫装物vi 起泡沫，图白沫
the water bubbled and foamed.
7 foil n
金属片，陪衬，衬垫vt 挫败，是受挫
their plan was foiled by the accident.
8 foremost adj.最好的，最著名的，最重要的
they are the two foremost literary critics in the united
states.
9 foresee
vt.预见，预知
already the class is foresee about who our
new teacher will be.
10 formidable
adj. 可怕的，令人敬畏的，难以克服的，难对付的
her eyes moved across
his formidable face.
11 formulate
vt,构造出，规划，系统的阐述
they intended to formulate a new and simple thery.
12 fort
n.城堡，堡垒
port 港口
13 forum
n.论坛，讨论会，专题讨论节目
14 fossil
n.化石，食古不化得人，老顽固
15 foster
vt.收养，培养，培养，促进adj.收养的
he argued that the ultimate goal of politics is to foster a
good society.
16 foul adj.
难问的，发臭的，令人不愉快的，糟透的，肮脏的，下流的，辱骂性的，天气恶劣的，有暴风雨的，邪恶的，罪恶的，vt,对
犯规，弄脏，n比赛中犯规
foul up 把
搞乱，把
搞遭
we need to foul one of their gruys in order to stop the
clock.
17 fracture
v,使断裂，折断，n，裂缝，裂痕，折断
his wrist has fracture.
18 fragile adj 易碎的，脆的，一损坏的，虚弱的，脆弱的
your fragile fantasy might not be true.
19 fragrance
芳香，香味，香水
20 frantic
adj.慌乱的，发疯的，发狂的
they made a frantic search for the lost child.
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