如果一个人想保持健康，他就有必要定期锻炼身体。
It is necessary that a person exercises regularly if he wishes to remain healthy.
他既生气又有点高兴，如果一个人能同时拥有这两种情绪的话。
He was at once furious and slightly pleased, if a person could be both at one time.
如果一个人的指纹与在刀上发现的指纹相符，这就是他触摸过刀的证据。
If a person's fingerprints match those found on a knife, this is evidence that he touched it.
如果一个人将金钱置于其他事物之前的话，那他很可能无法享受生活中的快乐。
If a person places money prior to anything else, it's very likely that he could not enjoy the happiness in life.
适应是有限度的，如果要求一个人集中精力完成好几个任务，那么吵闹的噪音就会带来更大的困扰。
There are limits to adaptation and loud noise becomes more troublesome if the person is required to concentrate on more than one task.
如果我们的生日快到了，你是否希望至少有一个人可以用一张漂亮的卡片祝贺你呢？
If our birthday is coming soon, do you wish that at least one person could congratulate you with a beautiful card then?
一个人如果对自己掌握的事实没有把握，就绝不该随便批评。
One should never criticize if one is not sure of one's facts.
如果你挪开一点，这里还可以容纳多一个人。
如果一个人呆着，谁会去敲自己的门呢？
如果一个人写下自己的想法，那么，诗歌就产生了。
如果我们有更多的人来分担成本，雇一个人就会便宜很多。
And it'll work out a lot cheaper to hire one if there's more of us to share the cost.
“如果它只属于我一个人，”男人说，“你应该得到它。”
"If it belonged to me alone," said the man, "you should have it."
如果你用一个人的母语和他交谈，他会把你的话听进心里。
If you talk to a man in his own language, that goes to his heart.
如果你想改变一个人的信念，你应该先与他们建立社会联系。
If you want to change somebody's beliefs, you should first establish social connection with them.
一个人如果每天吃50克加工肉（大约两块培根），患肠癌的风险会增加18%。
A person who eats 50 grams of processed meat per day—about two pieces of bacon—increases his or her risk of bowel cancer by 18 percent.
工资调查很容易把一个人重复计算进去：如果你是一个人同时做两份工作，你就会以两名员工的身份出现。
The payroll survey can easily double-count someone: if you are one person with two jobs, you show up as two workers.
如果让我一个人呆着，我也会做同样的事情。
I should do exactly the same thing, if I were left alone like that.
如果一个人可以选择自己喜欢的惩罚方式，那么惩罚他们又有什么用呢？
What's the use of even punishing someone if they can choose their own punishments as they like?
如果你给一个人一条鱼，他可以吃上一天。
如果一个人第二晚呆在同一个房间，会睡得更香。
If a person stays in the same room the following night they tend to sleep more soundly.
如果您到了那里，您不会变成一个人；但我变成了这种人样！
Had you come over there, you would not have been a man; but I became so!
如果你很了解一个人的性格，就很容易预测他们的行为。
If you know a lot about a person's character, it's easy to predict how they'll behave.
如果一个人很骄傲，他的朋友会因此而离开他。
如果一个人是绝对的清醒，我想那一击也许会要了他的命；我也说不准。
If a man was dead sober, I reckon maybe that whack might fetch him; I dono.
一个人不能这么贪心，如果我们想一次完成一件事情，事态可能会背道而驰。
A man can't be so greedy, maybe thing will go to an opposite side if we want to finish a thing in one time.
如果他不对传统中的某些东西加以批判，一个人有可能有这样的偏见，
It is an aspect of that prejudice that one might share with tradition if he doesn't criticize something in the tradition.
友谊不是一天建立起来的，如果电脑能模拟出一个人认识另一个人的过程中所发生的渐进变化，那么它将更容易被人们接受为朋友。
Friendships are not made in a day, and the computer would be more acceptable as a friend if it simulated the gradual changes that occur when one person is getting to know another.
如果一个人成功地做出了一道菜，另一个人则负责记录过程并拍照。
If one person manages to create a dish, the other person will write the process and take photos.
如果一个人发出指令“太阳”，他可能想让猴子去开灯。
If a person gives the command "sun", he might want the monkey to turn on the lights.
如果你有几个同事，不要只给一个人送礼物。
If you have some co-workers, don't give gifts to only one person.
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