搭便车

Female: Once I made a count of how many countries I'd hitchhiked through and it came to twenty eight.

有一次我数了一下我搭便车经过的国家有多少个，总共有28个。

I stood in t h e cold rain near Okla h oma City, trying to t h umb a ride h ome for t h e weekend.

我站在俄克拉荷马城附近的冷雨里，试着竖起大拇指蹭车回家过周末。（美国风俗，站在路边竖起大拇指，意思是搭便车。

They'll give us a lift when our car is under repair.

我们的车在修理时她们会让我们搭便车。

The thesis has three theoretic fundamentals. The first basis is the theory of international relation, which contains several concepts such as state interest, international cooperation, international regimes , international governance, international negotiation democracy and international political economy. The second one is the game theory, which includes such concepts as game theory, Nash equilibrium and Pareto optimum, six basic game graphs are prisoner's dilemma, boxed pigs, chicken, hegemony, stag bant and battle of the sexes, the major factors are information communication, benefits allocation, hegemony power, time ＆ repeated and player number etc. The third one is the theory of environmental economics, whose prime concepts are public good, externality, free riding and market failure, but the methods to internalize externality are cap ＆ trade , carbon taxes and policy ＆ measures .

本文有3个理论基础：一是国际关系理论，其基本概念包括：国家利益、国际合作、国际制度、国际治理、国际谈判民主制和国际政治经济学；二是博弈论，其基本概念包括：博弈论、纳什均衡与帕累托最优，所采用的6种基本博弈图式为，囚徒困境博弈、智猪博弈、斗鸡博弈、盟主博弈、捕鹿博弈和性别战博弈，影响博弈结局的要素主要是，信息与沟通、利益分配与利益选择、盟主与引导力量、时间与重复博弈、博弈者数量的影响；三是环境经济学理论，其基本概念包括：公共物品、外部性、搭便车和市场失灵，解决外部性的基本方法是，限量与交易、碳税和政策与措施。

Based on the analysis of free-riding, incentive mechanisms that have been proposed for P2P networks including micro-payment, direct reciprocity and reputation based models were surveyed and problems such as hidden information, information asymmetry and collusive behavior were pointed out.

在分析搭便车问题的基础上，全面介绍了基于微支付、直接互惠和信誉模型等典型激励机制，指出了这些模型中分别存在的隐藏信息，信息不对称和共谋等问题。

I lost track of the number of acts of kindness aimed at me, but they arrived as dependably as my daily hitchhiking miracle.

失去了曾经对我大方的人士的联系，但是他们像我每天搭便车那样的奇迹一样很守信的来到了。

I've lost track of the number of generous acts aimed at me there, but they arrived as dependably as my daily hitchhiking miracle.

失去了曾经对我大方的人士的联系，但是他们像我每天搭便车那样的奇迹一样很守信的来到了。

The simulation experiment and practical system show that our reputation system can control the pollution prolification effectively at a low cost.And it can punish the free-riding behavior,and cope with various attack situations.

通过仿真实验和实际系统验证，该信誉系统以较低开销有效抑制了污染文件在网络中的传播，并且能够惩罚搭便车行为，应对各种攻击情形。

He couldn't afford the fare; he thumbed his way all over Europe.

他付不起车费，於是他搭便车走遍欧洲。

He couldn't afford the fare; he thumbed his way all over Europe.

他付不起车费，于是他搭便车走遍欧洲。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！