The requirement that your turns sum to zero is necessary to keep you from getting caught in certain loops, such as one shaped like a capital G (try it out on paper to see what I mean).
转身数的总和必须是零，这是为了避免陷入某些环路，比如大写字母 G形状的环路（在纸上试着走一下这个形状，就会明白我的意思）。
In so far as linear motion is concerned, a body is in equilibrium if the vector sum of the forces acting upon it is zero.
就线性运动而论，如果作用于严格物体上的诸力的矢量之和是零，那么这个物体就处于平衡状态。
Power does not need to be a zero-sum game and nations need not fear the success of each other.
实力不一定是一场零和游戏，各国无需担心他国的成功。
Security is not a zero-sum game, and there is no isolated or absolute security. No country can be safe and stable in the absence of world and regional peace and stability.
安全不是孤立的、零和的、绝对的，没有世界和地区和平稳定，就没有一国安全稳定。
It is hard to blame Americans for seeing globalization as a zero-sum affair.
美国人将全球化视为一场零和博弈也并不完全是他们的过错。
If so, we return zero because the sum of all members of an empty list is zero.
如果是，则返回零，因为一个空列表的所有成员的和为零。
In fact, von Neumann's focus on two-person, zero-sum games left only a very narrow set of applications for his theory.
实际上，冯·诺依曼之于两人零和博弈的强调只给他的理论留下了非常狭窄的应用。
They believe they're playing a zero-sum game, where both must compete for the same resources.
他们认为他们在玩一场零和游戏，双方必须争夺同样的资源。
We've already talked about how security selection is a zero-sum game.
我们已经讨论过，证券选择是个零和博弈。
Labour mobility is not a zero-sum game: both senders and recipients win, as new jobs are created.
劳动力流动并非零和博弈：输出方和接受方双赢，因为有新的工作被创造出来。
Though he generally praises the report, he says that shifting spending from teenagers to babies reflects an unhealthy zero-sum mentality.
虽然整体上称赞这个报告，但是他称，把资金投入从青少年转向婴儿反映了一个不健康的零和心态。
Was Josiah, too, driven by a zero-sum worldview in which the worshippers of gods other than Yahweh looked like enemies?
约西亚是否也受零和博弈的世界观驱使，认为除耶和华之外，其他神都是敌人呢？
I reject the notion that China and the United States are engaged in a zero-sum competition, where one side must fall for the other to rise.
我不同意这样的说法，即中国和美国是在进行一场零和竞争，一方崛起，另一方就要衰落。
Oil pricing became a zero-sum game: every rise in prices benefited producers at the cost of consumers, and every reduction in price benefited consumers at the expense of producers.
石油定价变成了一个零和博弈：每次价格的上涨使得生产者获益，消费者受损，每次价格的下跌则使消费者获益，生产者受损。
But as Andrew Walker and Nicholas Farrelly of Australian National University put it, Thailand's elite is less conceptually adroit, calculating power in zero-sum terms.
但是就像澳大利亚国立大学的AndrewWalker和NicholasFarrelly所说的那样，泰国的精英对待概念不够灵活，他们将权力算计成零和游戏。
For more than six decades, the United States has resisted the gravitational pull of these "come home" debates and the implicit zero-sum logic of these arguments.
60多年来，美国顶住了此类“回家”论调的牵引力和这些论点所隐含的零和逻辑。
The United States must not see China or Russia through a zero-sum prism.
美国不能通过零和的棱镜来看中国或俄罗斯。
Therefore, we need to firmly reject the zero-sum mentality, which is not only morally wrong but also discredited in reality already.
因此，我们需要摒弃零和思维，因为它不仅不符合道义，也被现实证明是错误的。
But in the 21st century, it does not make sense to apply the zero-sum 19th century theories of how major powers interact.
但在21世纪，运用19世纪大国互动中的零和理论是没有道理的。
Futures trading is a zero-sum game.
期货交易是一种零和游戏。
In 1928, the year Nash was born, von Neumann outlined a first formal theory of games, showing that in two-person, zero-sum games, there would always be an equilibrium.
1928年，即纳什出生的那一年，冯·诺依曼概述了最早的正式博弈论，表明，在两人的零和博弈中，向来存在一种均衡。
For an object to be in static equilibrium, it is not enough that the sum of all forces is zero.
处于静力平衡的物体，仅仅所有作用力之和，为0是不够的。
So, after taking into account the market impact, and the commissions, and the fees, this zero-sum game becomes a negative-sum game.
所以，考虑到市场冲击，佣金，规费，这一零和博弈变成了负和博弈。
There need be no patsy, because the economy is not a zero-sum game.
这里不应该有替罪羊，因为经济并非零和游戏。
We need to add something to the curriculum, and unfortunately, curriculum development is a zero-sum game.
我们需要向课程中加入一些东西，并且不幸的是，课程开发是零和博弈。
We need to add something to the curriculum, and unfortunately, curriculum development is a zero-sum game.
我们需要向课程中加入一些东西，并且不幸的是，课程开发是零和博弈。
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