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The economic system in which real goods such as cars, pizzas and fruits can be traded against each other is called barter economy. 汽车、比萨饼、水果等实物可以互相交换的经济体系叫做易贸经济。
After basic exchange came into existence, more complex forms developed beyond a basic barter economy, and new forms of risk manifested. 在最基本的交易出现之后，更为复杂的交易形式在物物交换经济的基础上产生，新的风险形式也应运而生。
A barter economy. 以物易物的经济形式
A typical PC owner might see the system as a barter economy in which he gets free services, such as file backup and Web hosting, in exchange for the use of his otherwise idle processor time and disk space. 一般个人电脑的所有者可能会将这个系统视为以物易物的经济架构，可用?置的处理器时间和硬碟空间换取免费的服务，像是档案备份以及网站代管。
Rather than having to quote rate of exchange for each good in terms of every other good, as was the case in the barter economy, the price of everything could be measured in terms of corn. 与以物易物的经济不同，那时每种货物都必须用其他货物标出它的交换率，而现在任何东西都可以用玉米计价。
The use of a single medium is highly advantageous for the same reasons that a money economy is superior to a barter economy: it makes exchanges possible on an incalculably wider scale. 这种对单一交换媒介的使用，就象货币社会之所以比物物交换的原始社会更为进步的原因一样，是相当有利的：因为这使交换可以在不可胜数的大规模情况下得以进行。
We should practice economy even if we are rich. 即使我们富裕了也仍应该厉行节约。
On these islands a system of barter is used. 在这些岛上仍然实行着物物交换的制度。
They used to barter for horses with salt. 他们过去以食盐交换马匹。
We will never barter away our honor. 我们决不拿荣誉作交易。
The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
The prisoner tried to barter with the guards for their freedom. 囚犯企图跟看守做换取自由的交易。
The local economy is now in a mess. 当地的经济现在很混乱。
The economy should be shaped to a new pattern. 经济应该适合于一种新的模式。
Technology is a booming sector of the economy. 技术是一个迅速发展的经济部门。
The state of the economy is very worrying. 目前的经济状况令人十分担忧。
The expanding economy enriched the peasants. 不断发展的经济使农民们富裕起来。
The prisoners tried to barter with the guards for their freedom. 囚犯们企图和看守做换取自由的交易。
The new model delivers speed and fuel economy. 这种新型设计能提高速度、节约燃料。
The economy of the country is at a low ebb. 该国的经济处於衰退阶段。