Publishers in negotiations with Amazon, or whoever, say they want two-year contracts because there's such flux, but at the same time are asking authors for the duration of copyright.

和亚马逊等网站协商的出版商表示，由于情况不稳定他们希望签订两年期合同，与此同时却对作者提出版权期限的要求。

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An O2 spokesman wouldn't confirm any more details about the contracts, such as their duration.

一位O2的发言人不愿意透露更多的关于合同的细节，例如他们的合同期限。

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The leased car will typically be under factory warranty for the duration of the lease -- and car leasing contracts often have add-on provisos that cover routine maintenance, such as oil changes, etc.

一般来说，在租用期间的车辆都处于厂家质保期内，并且租车合同还常常附加了例如免费的维护、换机油等服务。

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The government introduced a change in the Localism Act 2011 which allows councils to introduce tenancy contracts of two-years duration.

BBC: No more Guildford council lifetime home tenancies

Control would still reside with the contributing nation-state that hired the private security company, and contracts can be designed to maintain control of the duration of deployment and implementation of armed force.

CENTERFORSECURITYPOLICY: The Impact of Private Security on US Foreign Policy