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A flea and a fly were trapped in a flue, and they tried to flee for their life.
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（一只跳蚤和一只苍蝇被诱进了一根管子里，它们努力逃命。 |
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A flea has smaller fleas to prey on them, and these have smaller still to bite them, and so proceed ad infinitum .
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一只跳蚤有更小的跳蚤咬它，而后者有更小的咬它们，如此以至无穷。 |
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A flea has smaller fleas to prey on them, and these have smaller still to bite them, and so proceed ad infinitum.
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一只跳蚤有更小的跳蚤咬它，而后者有更小的咬它们，如此以至无穷。 |
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A fleet is a group of starships that are built at shipyards.
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一支舰队就是一组恒星际飞船。 |
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A fleshy, wrinkled, often brightly colored fold of skin hanging from the neck or throat, characteristic of certain birds, such as chickens or turkeys, and some lizards.
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肉垂一些鸟从脖子或喉咙垂下的肉质、有褶皱、通常色彩明丽的皮肤褶皱，如鸡，火鸡和一些蜥蜴 |
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A flexible budgett is also called a variable budget because it shows how revemues and costs vary with volume throughout the budget range.
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弹性预算也叫变动预算，因其表明了收入及费用如何随预算范围内的业务量变动而变动的情况。 |
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A flexible exchange allowed her to spend time in service to her host community.
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她的其他服务活动还包括在一所孤儿院照顾婴儿，并担任学校话剧的导演。 |
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A flexible fiber-optic instrument used to view an object or area, such as a body cavity, that would otherwise be inaccessible.
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纤维镜利用光学纤维制成的一种韧性仪器，用于对一些用其它方法无法接近的物体或区域（如体腔）进行检查 |
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A flexible tuft of feathers located above the eyes of certain birds, such as owls, that functions in visual communication but not in hearing.
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毛簇，羽一些鸟类眼睛上方的一簇能活动的羽毛，如猫头鹰，用于视觉传递而非听觉器官 |
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A flexible wire or group of wires with insulating and damage-protecting external cover as used to carry signals or electric current.
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由一条或相互绝缘的多条导线和保护套构成的传输线,用于传送信号或电流。 |
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A flexible, experienced Research Division within the company works on the development and engineering of the designs, studying feasibility of production techniques and laying the technical groundwork for industrial production.
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经验丰富多变化的研究部门致力于研发与工程设计,研究生产技术的可能性并提出技术原理以改善工业生产. |
