waterpower，hydraulic power，water power ；

[例句] 蒸汽和水力可用来发电. Steam and water power are used for the generation of electricity.

[例句] 在19世纪人们大规模使用水力来发电. In the 19 th century waterpower was widely utilized to generate electricity.

elastic force，elasticity，spring，resilience，bounce ；

[例句] 橡皮球弹力好. A rubber ball bounces well.

[例句] 如果患了静脉曲张，可以考虑穿弹力护腿袜。 If you have varicose veins, consider wearing elastic support hose.

[物] magnetic force，force on charge ；

[例句] 这块铁已失去了磁力. The iron has lost its magnetic force.

[例句] 带电气体粒子会受磁力影响。 The electrically charged gas particles are affected by magnetic forces.

physical strength，physical power，physical capacity，spirit，main ；

[例句] 随着年龄的增加，人在消耗体力时心脏的输血能力和输血速度会有所减弱。 Age diminishes the heart's ability to pump harder and faster under exertion.

[例句] 纯粹的体力劳动已经产生了极其不利的影响。 The sheer physical effort had exacted a heavy price.

hearing，aural comprehension (in language teaching)，audition，ear ；

[例句] 耳垢堵塞耳道可能会影响听力。 Hearing can be affected by ear wax blocking the ear canal.

[例句] 听力有障碍的人们主要受到两大问题的困扰。 There are two main problems which afflict people with hearing impairments.

vigour，vitality，energy，archaeus，git-up；

[例句] 这个城市本身充满活力，个性十足。 The town itself was full of life and character.

[例句] 她是一位充满活力、博学多识的女子。 She was a woman with extraordinary vibrancy and extraordinary knowledge.

suction，suck，attraction ；

[例句] 有些泵是用吸力工作的. Some pumps works by suction.

[例句] “ 你们连气候或者地心吸力都还没法控制. 'You don't even control the climate or the law of gravity.

put forth one's strength，exert oneself，output power，output，contribute ；

[例句] 他们是不肯出力的. They will not take the sweat.

[例句] 有钱出钱, 有力出力. The rich will be asked to contribute money; the strong to contribute labour.

join forces，pool efforts，[物] resultant of forces，resultant，composition of forces ；

[例句] 常规液体里分子之间的键合力相对较弱。 The molecules in regular liquids are held together by relatively weak bonds.

[例句] 粘阻力等于合力. The viscous drags is equal to the resultant force.

productivity，productive forces，forces of production，productive power，fertility ；

[例句] 其结果是生产力的大幅提高。 The result has been a giant leap in productivity.

[例句] 农民们正引进提高生产力的新方法. Farmers are introducing in novations which increase the productivity.

render a service to，serve，potence，effect，effectiveness ；

[例句] 我认为他为英格兰队效力时不可能充分发挥自己的水平。 I don't think he could do himself justice playing for England.

[例句] 对于他们长期以来忠诚的效力我非常感谢。 I thanked them for their long and loyal service.

main force，main strength of an army，brunt ；

[例句] 他们的主力阵容以0比4惨败。 Their leading players were being whitewashed 4-0.

[例句] 主力部队开往前线. The main body of troops moved toward the front.

chocolate ；

[例句] 同时，把碗置于微沸的水上，将白巧克力放入碗中使其熔化。 Meanwhile, melt the white chocolate in a bowl suspended over simmering water.

[例句] 情绪低落的时候，她们就疯狂地猛吃巧克力和糖果。 When depressed, they dramatically overindulge in chocolate and sweets.

exert oneself，put forth one's strength，energize，forcibly ；

[例句] 刹车踩得越用力，车子减速越猛。 The harder the brake pedal is pressed, the greater the car's deceleration.

[例句] 兰伯特用力推了勒克韦尔一把，把他送上了路。 Lambert gave Luckwell a hefty shove to send him on his way.

动 make great efforts，try hard，exert oneself，effort，endeavor ；

do all one can，do sth. to the best of one's ability，try one's best，do one's utmost，do one's endeavor ；

[例句] 一名侍者尽力抹掉溅出的食物。 A waiter mopped up the mess as best he could.

[例句] 她猜想他正在尽力掩饰笑容。 She fancied he was trying to hide a smile.

do one's utmost，pull out all stops，spare no efforts，try by every possible means，as best one can ；

[例句] 拐过斜弯时他竭力将自行车把稳。 He struggled to hold the bike down on the banked corners.

[例句] 该公司正竭力为其新产品寻找买主。 The company is struggling to find buyers for its new product.

violence，force，rough work，strong arm，the mailed fist ；

[例句] 电视台受到警告，要求对暴力场面的描绘采取谨慎态度。 Television broadcasters were warned to exercise caution over depicting scenes of violence.

[例句] 他是宗派暴力中的第5个罹难者。 He was the fifth person to be killed in sectarian violence.

dynamometry ；

[例句] 测力元件采用悬臂梁或柱的形式. Force - measuring elements employ either a cantilever beam or a column arrangement.

[例句] 关于内式天平, 有两种基本类型; 测力天平和测力矩天平. As far as internal balances go , there are two basic types: force balances and moment balances.

with all one's strength，do everything in one's power，all-out，sparing no effort ；

[例句] 他正全力应对如何解决通货膨胀的问题。 He is tussling with the problem of what to do about inflation.

[例句] 他们已经为儿子竭尽了全力。 They had done everything humanly possible for their son.