n. 活力（energy的名词复数）；[物理学]（原子、电、辐射的）能；[常用复数]精力；（有效地发挥的）力量

energy，force，might，power，strength，vigour

【解说】

这组词的共同意思是“能”“能量”“精力”。它们的区别在于1.energy在物理学定义中为“能”“能量”，用于生理学上指“精力”。2.power系一般用语，可指动力、思维能力等各种力量或能力。例如A car needs a lot of power to go fast.汽车高速行驶需要很大动力。Every normal，healthy person has power to think.每一个正常、健康的人都有思维能力。3.strength指某人或某物所具有的内在力量，可指体力、力气或抽象的力量。例如He hasn't got enough strength to get out of bed.他没有足够的力气下床。At last his strength gave out.他的体力终于不支了。He has strength of character.他性格坚强。Union is strength.团结就是力量。4.force指的是物质或精神力量，多指为做成某事而使用的力量，也常指武力。例如We had to use force to get into the house.我们不得不强行进屋。Some of them forced their way into our office.他们中有些人强行进入我们的办公室。His arguments forced them to admit he was right.他的论据迫使他们承认他是对的。The thief forced her to hand over the money.贼强迫她把钱交出来。5.might指“力量”“威力”“强权”“权势”等，既可指人体的力量，也可指政治、军事等的强大而产生的威力，其程度要比其他几个词强。例如The army fought bravely，but it was crushed by the might of its powerful enemy.军队勇敢地战斗，但最终还是被敌人强大的势力所摧垮。They would have little chance to survive against our might.在我们的强大力量面前，他们几乎无法继续生存下去。The work was so difficult that it was beyond my might.这项工作太难了，它超出了我的能力。The competition is strong and we must study with all our might.竞争是强有力的，我们须尽全力地学习。6.vigour指生命产生的力量，常译为“活力”。例如He is full of vigour.他充满了活力。