As a stopping point on the famous Silk Road, Loulan is believed to have been gradually covered over by sandstorms from AD 200 to AD 400.

楼兰是著名的丝绸之路的一个中转站，据说在公元200年至公元400年期间，它逐渐被沙尘暴覆盖。

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The tug between national and supranational regulation has gradually led to an ad hoc arrangement for the international banking system.

在国际银行体系中，为了权衡一国监管与跨国监管之间的冲突，曾经做出过一定的妥协。

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It is believed by many people to have been gradually covered over by sandstorms from AD 200 to AD 500.

很多人相信，它是在公元200年至公元500年之见被风沙渐渐覆盖了。

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Google has surged, along with the broader market, as Apple has sunk, as its mobile business has proven to be incremental, rather than cannibalistic, to its core search competency, and as YouTube has gradually taken a bigger bite of TV ad budgets.

FORBES: Google Could Top $1,000 If Mobile Strategy And YouTube Video Ads Deliver

The existing US grid is really an ad hoc assembly of many networks that grew together and gradually developed interties and the ability to sell power to each other.

FORBES: The Good Grid and why bragging about being "off the grid" is silly