The most difficult, because as the plot is essentially predetermined, the writer needs skill to keep the momentum going, conjuring up original, complex characters and vivid scene-setting.

说它最困难，是因为故事的情节实际上已经预先设定好了，作家需要使用技巧来让故事向前推进，还要构思出原创的拥有复杂个性的角色与逼真的场景。

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This is evidence, the researchers believe, that young chimps have a photographic memory which allows them to memorise a complex scene or pattern at a glance.

研究人员相信这就是证据，证明幼猩猩拥有图形记忆能力，能够使它们在一瞥之下记住复杂的景象或者图案。

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The problem becomes more complex if your application modifies a node that is buried deep within a scene graph or selected interactively by a user.

只有当你的程序修改一个在场景图中隐藏很深或者经由用户交互式而被选择的节点的时候，问题才会比较复杂。

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The attack left Boston police with "the most complex crime scene that we've dealt with in the history of our department, " Commissioner Ed Davis said.

CNN: Boston Marathon bombings: More details, more questions

The Boston investigation, led by the FBI, intensified Tuesday, with authorities interviewing witnesses and examining what one official called the "most complex crime scene" the city had ever dealt with.

WSJ: Boston Bomb Clues Surface: Lethal Devices Believed Built From Pressure Cookers; Hotels, Rentals Canvassed

The Montgomery County Sheriff's Office said detectives began a "systematic canvas and search" of areas near the shooting scene and spied the car at the apartment complex.

CNN: STORY HIGHLIGHTS