【正确答案】
   健步走这种锻炼能¹给人的健康带来很多益处。比如，健步走能¹消耗富余营养，使肌肉强健，并促进新陈代谢。
   V1: There are lots of health benefits that one can get¹ from walking for exercise. For instance, it can decrease¹ excess nourishment, make stronger muscle and promote metabolism.
   V2: The exercise of brisk waking benefits¹ health in many ways; for example, it reduces¹ surplus nourishment, toughens muscles, and improves metabolism.
   据说，要取得最好的效果²，你必须每天至少健步走40分钟，每周如此锻炼五次。
   V1: Some say that you must have a walking routine for at least 40 minutes a day for 5 times a week in order to get the best results².
   V2: It is said that to obtain the best possible results²,  you must walk for a minimum of 40 minutes per day, 5 times a week.
   有很多关于这种锻炼方法³的事是你必须了解的。下面是你必须知道的关于健步走⁴的几件事：
   V1: There are a lot of facts you must learn about this type of exercise³. Below are several things you have to know about walking as exercise⁴.
   V2: There are many things you should understand about this exercise³. Below are things you have to know about it⁴.
   ● 健步走能燃烧卡路里⁵——根据步行速度和人的体重，你⁶可以通过每天健步走至少30分钟的锻炼形式燃烧多余的卡路里。
   V1: ● Brisk Walking Burns Calories⁵—One⁶ can burn excessive calories by doing this exercise for at least 30 minutes a day, depending on the speed and weight of the person.
   V2: ● Burn Calories by Walking⁵—You⁶ can burn excess calories by doing this exercise for at least 30 minutes a day, depending on your speed and weight.
   例如，一个体重55公斤的人⁷，按每小时五公里的速度健步走30分钟，就可以燃烧108卡路里。
   V1: For example, if a 55-kilogram person walks for 30 minutes with the speed of 5 km per hour, he/she/they⁷ burn(s) 108 calories.
   V2: Suppose a 55-kilogram person walks for 30 minutes at the speed of 5 km per hour, that person⁷ burns 108 calories.
   如果一个90公斤重的人按相同的步速走相同时间，就可以燃烧172卡路里。
   V1: If a 90-kilo person does the same with the same speed and length of time, he can shed 172 calories.
   V2: And if a 90-kilo person does the same routine with the same speed and duration, he will lose 172 calories.
   ● 控制血压⁸——有大学研究表明⁹，健步走能有效地降低血压的峰值。每周健步走三次能帮助一个人将他的收缩压降低5毫米汞柱。
   V1: ● Controlling⁸ Blood Pressure—research by a university indicates⁹ hat walking has the effect of decreasing the maximum blood pressure. Walking 3 days a week helps reduce the highest blood pressure level by 5 mmHg.
   V2: ● Control⁸ Blood Pressure—University studies showed⁹ that walking is effective in decreasing the peak of blood pressure. A person who does their routine 3 days in a week helps their systolic blood pressure to decrease by 5 mmHg.
   ● 提高记忆力——这种锻炼的好处之一就是能提高一个人的记忆力¹⁰。
   V1: ● Memory Improvement—one of the benefits of this kind of exercise is to improve your memory¹⁰.
   V2: ● Improve Memory—one benefit of this type of exercise is improving memory¹⁰.
   很多研究人员都发现随着人不断老化，大脑内被称为“海马体”的部分会开始萎缩，导致健忘以及记忆丢失。健步走能扩大海马体的容积，从而提高记忆力。
   V1: Scientists have discovered that in the aging process, a part of the brain called "hippocampus" begins to become smaller, causing poor memory or even memory loss. Walking helps enhance memory by enlarging the hippocampus.
   V2: Many researchers have found that as people grow older, a part of the brain called "hippocampus" starts shrinking, which causes forgetfulness and memory loss. Walking helps in improving the memory by increasing the volume of hippocampus.
   ● 培养耐力——当你养成健步走这种锻炼习惯以后，肺活量将得到增强¹¹。
   V1: ● Develop Stamina—Your lung capacity (pulmonary capacity/lung volume) improves¹¹ when you do this type of exercise routine.
   V2: ● Increase Stamina—Air intake in the lungs is improved¹¹ when you do this type of exercise routine.
   同时，健步走还能让¹²你的心脏更强健、让¹²你的力量水平更上一台阶、让¹²你的腿脚更有力气并让¹²你拥有更积极的生活态度。
   V1: Also, walking can make¹² your heart stronger, your energy level higher, your legs more powerful, and your lifestyle more active.
   V2: And it will make¹² your heart stronger, power up¹² your energy level, give¹² your leg more strength and have¹² an active lifestyle.
   ● 将心脏病发作的几率降到最低——健步走能降低罹患心脏疾病的风险。
   V1: ● Reduce the Risk of Heart Attack to the Minimum—Brisk walking can decrease the risk of heart diseases.
   V2: ● Minimize Heart Attack Risk—Brisk walking reduces the risk of heart disease.
   研究表明，每天步行2.3公里的人与那些不锻炼的人相比，得心脏病¹³的风险将降低一半。
   V1: According to studies, people/subjects who walk 2.3 kilometers per day lower the risk of having heart attack¹³ by 50% in comparison with those who do not.
   V2: Studies show that walking 2.3 kilometers a day cut the risk of having the disease¹³ in half compared to those who do not.

【答案解析】 1.汉语中“能”的出现频率较高，不一定都要译出来。以上译文2删除了can，语言简化，语义仍然正确。
   2.在汉语中，状语“要取得最好的效果”应前置。英译文中可前置(译文2)，也可后置(译文1)。
   3.汉语中的量词较多，如“一匹马”、“一条鱼”；而英语中缺少量词，不需译出，仅译成a horse，a fish即可。同理，this type of exercise也不妨简化成this exercise。
   4.由于前面已经出现过“健步走”，这里改用代词it指代更符合英语的行文习惯。
   5.小标题的题目可以使用句子(译文1)，也可使用词组(译文2)，但要注意全文小标题格式前后统一。译文2全部采用动词原型是妥当的。
   6.为了泛泛指代一个人，可用one或you，前者比较正式，后者比较口语化。
   7.为了指代一个人，可用he；但女权主义者希望使用she；折衷的办法是使用中性的they。译文2改用that person也不失为一种机敏的指代方法，不会出错。
   8.小标题中使用动词原形Control或使用Controlling都是可以的。使用Control的缺点是：有些读者误以为Control是命令式，隐含的主语是You，所以小标题的语义可能是“请你控制血压”；但这种可能性不大，而且使用动词原形Control比较简洁，所以很多小标题都使用动词原型。使用Controlling，不隐含主语，所以总是正确的。
   9.汉语对时态不是很敏感，中国读者通常不会去考虑本句中的“表明”是什么时态。译文1使用现在时态indicates，语气较强，显示这是普遍真理。译文2使用过去时，语气较弱，只是客观地讲述该大学的研究“当时表明了……”。现再看一个类似的例子：看完电影后，甲问乙，“你觉得这个电影如何?”英语本族人通常会说How did you like the film?也即问你当时的感受如何。如果你问How do you like the film?语气就比较强了，需要对方作出真理式的价值判断了。
   10.“提高一个人的记忆力”可直译成improve your/a person's memory。译文2删除代词，仅说improving memory更简单明了。
   11.受汉语影响，往往会将“得到增强”译成被动语态的is improved。其实，译成主动语态的improves也是可以的。现代英语中，使用主动语态的情况在增多。
   12.汉语中有四个“让”，译文2译成四个动词，比较啰嗦。译文1采用了提取公因式的方法，合译成一个make，更为简洁。
   13.“心脏病”可以译成heart attack；但鉴于在前面一句已经出现过heart disease，也可改用代词it来指代。