These characters were to be entirely computer generated, but with their movements and facial expressions controlled by actors.

这些角色全部由电脑生成，但是他们的动作和表情都由演员控制。

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But there is a huge leap in realism and audience engagement when virtual characters' movements and facial expressions can be controlled by actors.

但是，虚拟角色的动作和面部表情一旦可以由演员控制，影片在真实性和观众参与方面就可以实现大幅度跃升。

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Assembly languages are also used when some part of the computer has to be controlled directly, such as individual dots on a monitor or the flow of individual characters to a printer.

当计算机的某个部分必须被直接控制时，如监视器上的单个点或者流向打印机的单个字符，这时也使用汇编语言。

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