This question, famously posed by Machiavelli, lies at the heart of Joseph Nye's new book.
这个问题因被马基雅维利提出而广为人知，是约瑟夫·奈新书的核心。
Encouraged by his friends, Jack didn't lose heart and kept on trying.
在朋友们的鼓励下，杰克没有灰心，而是继续努力。
The learning paradox is at the heart of "productive failure", a phenomenon identified by researcher Manu Kapur.
学习悖论是“生产性故障”的核心，“生产性故障”是研究者马努·卡普尔定义的一种现象。
You may find yourself having to learn something by heart.
你可能发现自己不得不记住一些东西。
We all paid more attention to watching them by heart.
我们都更注意用心观察它们。
The view of repetitively boring lessons and learning the facts by heart, which is sometimes quoted in relation to Japanese classes, may be unfair and unjustified.
有时课程重复枯燥和学生死记硬背的现象会和日本的课堂联系在一起，这可能是不公平、不合理的。
Sometimes, it just means being connected by the heart.
有时候，它只是意味着心灵的联结。
By slowing their heart rate, blue whales can send more blood to the muscles that they use to dive.
通过降低它们的心率，蓝鲸可以向用于潜水的肌肉输送更多的血液。
Follow Your Heart by Australian writer Andrew Matthews tells us that making our dreams real is life's biggest challenge.
澳大利亚作家安德鲁·马修斯写的《跟随你的心》告诉我们，实现梦想是人生最大的挑战。
Heart, written by Edmondo De Amicis from Italy, is a diary of an Italian boy Eric.
《爱的教育》是由来自意大利的埃迪蒙托·德·亚米契斯所著，它是意大利男孩埃里克写的一本日记。
The heart-stopping moment was quickly followed by mental math.
在这个惊心动魄的时刻之后，我很快就开始在内心计算。
Maybe I could make a mosaic (镶嵌画) by using the pieces of my broken heart.
也许我可以用我破碎的心的碎片来做一个镶嵌画。
400,000 people in England have given up smoking slowly and the number of people with heart problems has fallen by more than 2%.
英国有四十万人慢慢地戒烟，有心脏问题的人数下降了超2%。
People were surprised by his experience, and described him as having "a heart of gold".
人们对他的经历感到惊讶，并形容他有一颗“金子般的心”。
This would mean diets with less saturated fat and fewer premature deaths caused by heart disease, they write.
他们指出这样就降低了饮食中的饱和脂肪酸和由心脏疾病导致的婴幼儿夭折。
Initially, she had expected to find that obesity's effect on cognition was mediated by heart and circulatory pathways such as blood flow and blood pressure.
起初，她本来期望能看到在诸如血液流动和血压这类循环途径和心脏的作用下，肥胖症给认知造成的影响会得到调节。
If you know the actual definitions by heart, feel free to use them, but try to put them in your own words rather than cheating!
如果你心中已经有准确的标准，请随意说一说，不过请用你自己的方式来说，别骗我们哦！
Know the specifications by heart and deviate from them only after careful consideration.
要将规范熟记于心，如果要背离规范，需经过慎密的考虑后才可以这样做。
Teacher Fei hadn’t listened closely, but it was a question he knew by heart, and he said yes, he had remembered to pick up the bottles the moment they were delivered.
范老师并没有走近去听，他对母亲要说的话早就了然于心。 他回答说好的，等奶一送过来他就会把奶瓶收好。
We knew whole scenes by heart, like the end of Flying Deuces, when Hardy is killed in a plane crash and then reincarnated as a horse with a black mustache and a bowler hat.
我们用心理解整个场景，像飞行追杀令的结尾，当哈代死于飞机坠毁，转世成为一个具有黑髭和圆帽的马。
You are likely to have been thinking about the situation in exactly the same way for a very long time. You know the story by heart.
很可能你会一直用同一种方式看待这件事，而它也早烂熟于心。
You know the story by heart. Crack open to the possibility of discovering something new about it that has the potential to release you from suffering.
试着打开心扉，去发现一些新的想法，或许你能从痛苦中解脱出来。
I've listened to it dozens of times.I don't understand it but I know it by heart.
这个讲座我已经听过很多次了。虽然我不明白是什么意思，但是心里却记下了它的内容。
In several studies, this test alerted doctors to over 90 percent of people with atrial fibrillation, as confirmed by heart monitoring.
在几项研究中，经心脏监测证实，这个测试让医生注意到，超过90%的人患有房颤。
All the programme is perfectly worked out and learnt by heart.
所有的节目都被演员完美的表演并铭记在心。
By 2003, Hedrick and Calhoun were pushing ahead with research on using their stem cells to repair hearts damaged by heart attack or chronic disease.
到2003年，亨德里克和卡尔霍恩还在努力推进相关研究，力图利用干细胞修复因心脏病或其他慢性病而受损的心脏。
He wrote once that, "The chief thing is to know your duties and our edicts by heart and not put off things until tomorrow, like his son did."
他曾经这样写道，“最要紧的事就是牢记我们的职责和法令，并且不把今天能做的事拖延到明天去做”，他儿子就是这么拖沓的。
All children were required to learn the Green Book, and some could recite passages by heart.
全国所有孩子都被要求学习绿皮书，有些章节甚至需要身心投入地背诵下来。
I may not recite the whole text, but I will read every line at least once and try to remember them by heart. And for unfamiliar words, I will simply read more times.
我喜欢在演讲前反复练习，虽然不能把整个讲稿背下来，但每一个句子都背过一遍，不熟悉的词多念几遍，这也有助于现场克服紧张。
I may not recite the whole text, but I will read every line at least once and try to remember them by heart. And for unfamiliar words, I will simply read more times.
我喜欢在演讲前反复练习，虽然不能把整个讲稿背下来，但每一个句子都背过一遍，不熟悉的词多念几遍，这也有助于现场克服紧张。
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