两大房贷巨头并非引起房屋市场乱状的祸首，但是近年来，由于国会向他们施压，要求他们购买更多的次级债，这在某种程度上导致他们加速了房屋市场问题的出现。
Those two giants did not cause the housing mess, but in recent years they greatly contributed to it, partly through congressional pressure on them to increase their purchases of subprime loans.
要求他们写一份体验性购买曾经给他们带来快乐的描述。
They were asked to write a description of an experiential purchase that had given them pleasure.
如果玩家还没有购买并安装游戏，那么仍然可以要求他们先进行注册，然后才允许他们访问站点内容。
If he has not purchased and installed a game, you still might require them to register before you give access to premium content.
深度互操作：购买行为将会影响供应商们，要求他们在IT生态环境中实现与其他产品的无缝整合能力。
Deep interoperability: Buying behavior will shape the way vendors will approach seamless interoperability with other products in the it ecosystem.
深度互操作：购买行为将会影响供应商们，要求他们在IT生态环境中实现与其他产品的无缝整合能力。
Deep interoperability: Buying behavior will shape the way vendors will approach seamless interoperability with other products in the it ecosystem.
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