We have a moral obligation to increase the amount of technology in the world.

因此我们在道德上有责任增加技术在世界上的份量。

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In Britain this is provided through a mechanism called the Renewables Obligation, which requires those who sell electricity to buy an increasing amount of it from renewable sources.

在英国，补贴是通过一个称为可再生能源义务法令来执行的，该法令要求供电商必须购买数量不断增加的可再生资源电力。

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Futures contracts involve the formal obligation to sell or buy a given amount of a commodity at a specified time and price.

期货合约涉及在指定时间和以指定价格，出售或购买一定数量商品的义务。

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Pettitte was making an extraordinarily large amount of money and felt a tremendous obligation to do everything that he could to return to the Yankees in an expeditious manner.

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Major fashion brands also have an obligation to dramatically reduce the amount of water and energy used and waste emitted in making and selling their clothes, as well as to offer consumers more stylish products that are made out of recycled and eco-friendly materials.

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The Grangetown ward has money coming from private developments through planning obligation, where developers agree to provide a certain amount of funding as part of the deal with the council for planning permission, and it is possible some of this could be used.

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