I flunked math in second grade.我二年级时数学不及格。He flunked out ( of college ) last year.他去年 ( 从大学 ) 退学了.I'd like to thank the two professors who flunked her.我倒要谢谢那两位给她不及格的先生....

n.环流，回流，周流...

adj.声音甜美的，悦耳的...

flutter的近义词/同义词有：tremble, wave, move, flap, flourish, flap, wave, blink, flourish, palpitate, addle, move, disturbance, tremble, flit, flicker。vi.flutter的近义词（飘动;摇动）：tremble, wave, move, flap, flourish。flutter的近义词（其他释义）：f...

n.有沟槽的衣料，吹笛子，笛声，刻凹槽...

fluorbaryt的音标：fluorbaryt的英式发音音标为：['flu:əbærɪt]fluorbaryt的美式发音音标为：['fluəbærɪt]...

effluent的复数形式为：effluents...

fluanisone的音标：fluanisone的英式发音音标为：[fl'jʊənɪzn]fluanisone的美式发音音标为：[fl'jʊrnɪzn]...

氟奋乃静...

n.荧光素...

hexaflurate的音标：hexaflurate的英式发音音标为：[hek'sɑ:flʊərɪt]hexaflurate的美式发音音标为：[hek'sɑflʊərɪt]...

v.使与氟素化合，在（饮水）加少量的氟( fluorinate的第三人称单数 )...

If the flue overdraws, all the heat goes right up the chimney.如果风管抽风过度的话, 热量就会从烟囱直接跑掉了.The flue has become sooted up.烟道里都是黑灰.The fire won't burn because the flue is blocked up.因烟道堵塞火烧不起来.Flue gas desulfurization is ...

n.（毛毯等落下的）绒毛( fluff的名词复数 )，未成功的尝试，错误，失误v.（使）起毛，（使）变松( fluff的第三人称单数 )，抖松，刷柔软（羽毛、毛皮、毛发等）...

fluorohydrocarbon的音标：fluorohydrocarbon的英式发音音标为：[flʊərəʊhaɪdrə'kɑ:bən]fluorohydrocarbon的美式发音音标为：[flʊəroʊhaɪdrə'kɑbən]...

If fluxed parts are allowed to stand, the water in the flux will evaporate.如果容许焊剂部件出于竖立状态, 则焊剂内的水分将会蒸发掉....

fluttering的音标：...

influence的音标：influence的英式发音音标为：['ɪnfluəns]influence的美式发音音标为：[ 'ɪnfluəns]...

The 160-metre falls mark the dramatic confluence of the rivers Nera and Velino.内拉河和韦利诺河的汇合处是落差达160米的瀑布，景象十分壮观。a confluence of artistry, superb choreography, and stage design.艺术技巧、优美的舞蹈和舞台设计的融合They built the city at the c...

electrofluor的音标：electrofluor的英式发音音标为：['elektrɒflʊə]electrofluor的美式发音音标为：['elektrɒflʊr]...

flutters的音标：...

chlorflurecol的音标：chlorflurecol的英式发音音标为：[klɔ:f'lu:rekɒl]chlorflurecol的美式发音音标为：[klɔf'lurekɒl]...

n.氟氢可的松...

...

fluorane的音标：fluorane的英式发音音标为：['flu:əreɪn]fluorane的美式发音音标为：['fluəreɪn]...

hydrofluidic的音标：hydrofluidic的英式发音音标为：[haɪdrəʊflu':ɪdɪk]hydrofluidic的美式发音音标为：[haɪdroʊflu'ɪdɪk]...

Use: Intermediate in the manufacture of fluoro - containing pesticides and medicines.用途: 合成 含氟 类农药,医药的中间体.The uses and synthetic methods on 2,4 - Dichloro - 5 - Fluoro - benzoic acid were described in detail.简要概述了2,4-二氯-...

v.用氟化物处理（fluoridize的第三人称单数形式）...

superfluous的音标：superfluous的英式发音音标为：[su:'pɜ:fluəs]superfluous的美式发音音标为：[su'pɜrfluəs]...

氟桂嗪...