stroke，fondle，chuck，fingering ；
[例句] “不要为那个感到沮丧，”他一边说，一边抚弄着本乌黑的卷发。 "Don't let that get you down," he said ruffling Ben's dark curls.
[例句] 他坐在那儿沉思,轻轻地抚弄着桌布. He sat there ruminating and picking at the tablecloth.
fend off，foil，parry，shield，fend ；
[例句] 他挡开了砸向头部的一击。 He parried a blow to his head.
[例句] 他用肩膀挡开防守队员,然后射门. He shouldered off a defender and shot at goal.
[化] ferromagnetism ；
[例句] 严格区别铁磁性与顺磁性物质有时是很困难的. It is sometimes difficult to draw the line separating ferromagnetic from paramagnetic substances.
[例句] 是否能制造出室温下的铁磁性半导体? Can we make semiconductors that are ferromagnetic at room temperature?
filament ；
[例句] 埃米觉得她闻到了伊莎贝尔身上飘出的一丝极微弱的花香味香水的味道。 Amy thought she caught the faintest drift of Isabel's flowery perfume.
[例句] 丝极在一些电子管中形成阴极的高电阻的金属丝或金属带. A high - resistance wire or ribbon forming the cathode in some thermionic tubes.
filariasis，helminthiasis wuchereri，wagaga ；
[例句] 在达到基本消灭丝虫病地区, 马来丝虫病传播流行呈下降态势, 防治措施可以? A decline trend of the transmission of malayan filariasis, therefore, has been exhibited.
[例句] 目的为提高丝虫病的诊断和治疗水平. Objective To improve the diagnosis and the treatment of filariasis.
（发新闻专稿） distribute news dispatches，（批准稿件付印） send manuscripts to the press ；
[例句] 截至发稿, 记者没能联系到上好佳公司. At press, the reporter could not contact the company to better good.
[例句] 这篇报道请编辑更定后再发稿. The report shall be published after amendments by the editor.
infilling，filler，pack ；
[例句] 内部充满了舒适的聚酯填充物和柔软的棉花. Heel Pillows filled with comfortable polyester filling and covered in soft cotton.
[例句] 如何选择最适合自己枕头的填充物类型? How to choose the most suitable type of filler for pillows?
shark's fin，fim，fin，shark fin ；
[例句] 请安排鱼翅和海参. I would like shark's fin and sea cucumber to be served.
[例句] 你注意过餐桌上的鱼翅 吗 ? You paid attention to shark's fin on the table do?
firearm，firearms ；
[例句] 从公路发射火器是违法的. It is illegal to discharge a firearm from a public highway.
[例句] 研究火器及子弹运动的科技. The science of firearms and the absorbing of the motion of bullets.
swoop down on，pounce，snap，swoop ；
[例句] 站长猛扑过去，奋力夺下他手中的枪。 The stationmaster pounced and wrestled the gun from him.
[例句] 狮子蹲下身，准备猛扑。 The lion crouched ready to pounce.
become flustered，be thrown into a panic，get alarmed ；
[例句] 你最好简单吃点快餐，不要着急着慌地吃正餐。 You are better eating just a small snack than hurrying a main meal.
[例句] 琼斯因为外科大夫丢下他不管,感到有些着慌. Jones grew a little uneasy at the desertion of his surgeon.
illuminant body，light，[医] luminophore，luminary，illuminant ；
[例句] 银河是由无数的发光体-星星组成的. The Milk Way is composed of an infinite number of radiant stars.
[例句] 该发光体在低温下具有较高的内聚力,高温时容易瓦解. This luminosity has great cohesive force at low temperature and.
名 [化] fluorine (9号元素，符号F)，Fl，fluorin ；
[例句] 在浓缩过程中大部份氟蒸出. A large proportion of the fluorine is vaporized during the concentration process.
[例句] 因此, 大多数液浮陀螺充以氟碳化合物. For this reason, most floated gyros are filled with the fluorocarbons.
inset，insert，foldout，interleaf ；
[例句] 书中有20张有关男性时尚的彩色插页。 There are 20 full-colour pages of fashion for men.
[例句] 八页的保健插页 an eight-page pull-out on health
move back and forth，fiddle with，order about，manipulate ；
[例句] 他捡起一支铅笔，无所事事地摆弄着。 He picked up a pencil and toyed with it idly.
[例句] 我想知道是谁在瞎摆弄这辆婴儿车。 I'd like to know who's been messing about with the pram.
pincerlike ；
[例句] 他们正展开钳形攻势，要把该共和国一分为二。 They are moving in a pincer movement to cut the republic in two.
[例句] 同时,外圈钳形围攻的部队已经会师合围. In the meantime the outer pincers had met and closed.
foreleg ；
[例句] 我们的马摔断了右前腿，只好对它实行安乐死。 Our horse had to be humanely destroyed after breaking his right foreleg.
[例句] 它用前腿抓住牺牲品,把喙刺入对方身体. It grasps its victim in its forelegs and pierce it with its rostrum.
form into columns，organize into teams，[军]formation ；
[例句] 飞机编队飞行. The aircraft are flying in formation.
[例句] 这类操纵的例子包括编队飞行, 仪表飞行和着陆. Examples of this type of control include formation flying, instrument flight, and landing.
franc ；
[例句] 他们同意将这幅画的价格提至4,500法郎。 They agreed to bid the picture up to 4,500 francs.
[例句] 葡萄价格大幅上涨，达到每公斤32法郎。 The price of grapes had shot up to 32 francs a kilo.
fresh lake，fresh water lake ；
[例句] 我们所用的地表水几乎全由淡水湖和河流供给. Fresh - water lakes and streams furnish nearly all of our surface water supplies.
[例句] 几千年前, 黑海还是个淡水湖. Millennia ago, the Black Sea was a freshwater lake.