而美国人在表情控制方面的能力是最弱的。
On these measures, Americans displayed the least control over their facial expressions.
它反映面部表情控制和自我呈现的个体差异。
It reflects the individual difference of facial expression control and self-presentation.
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。
But there is a huge leap in realism and audience engagement when virtual characters' movements and facial expressions can be controlled by actors.
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