The game was graphically elegant and easy to grok. To play, you arranged seven different kinds of falling blocks into a tower without letting them pile too high.

这款游戏图形优雅、易于理解：游戏时，你要把不断落下的七种不同的方块垒成一个塔，同时不要垒得太高。

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The hotel is centrally located in Bosphorus, allowing easy access to several local attractions such as Galata, Maiden's Tower, Sultanahmet, and Hagia Sophia.

酒店位于博斯普鲁斯海峡，允许方便地访问当地的几个景点如加拉塔，少女塔，住宿，和圣索菲亚。

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This one's about as easy as they come - just look underneath the guard tower. It's sitting right there on the ground, partially obscured by bushes.

这一个很简单-只是往守卫塔下面看就行。它正坐在地面上，部分被灌木挡着。

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This makes them easy to set up--no tower or central antenna needed--as well as hard to knock out, since if one device goes down, the others will route around it.

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In decentralized and interconnected cyberspace, this requirement is not so easy to satisfy: A cyberattack on a cellphone tower used by the adversary may affect civilian targets along with military ones.

WSJ: Battling the Cyber Warmongers

For those that think it is easy for a Harvard Professor to make such pronouncements from an ivy tower, the book explains that Christensen became a professor after a prior career that included being fired from a company he helped to found.

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