之后，专家们利用小球的变动操纵数码替身的脸部动作，使它做出相同的表情。
The movements of the beads were then used by artists to manipulate the digital double's face to produce the same expressions.
表演这样的魔术几乎等同于给自己设置难题：‘我想看看自己是否能创造出貌似真实的画面来；例如让宇宙飞船飞起来，为某个人寻一个替身，让他们行为动作完全一致。’
It was almost like creating my own assignments: 'I want to see if I can make that thing look real; like that spaceship's really flying, like that person has a twin and they're in the same frame.'
事实上，53岁的阿汤哥为了让这场戏更加刺激好看，坚持不用特技替身自己完成了这组高危动作。
The fact that Cruise, a 53-year-old action star, insisted on doing it by himself instead of using a stunt double makes the scene more pulse-pounding.
那个广告是在韩国拍的，因为这个动作还是有很大的难度和危险性的，所以当时也找了替身。
That commercial was filmed in Korea. Because the action was challenging and dangerous they had a substitute ready.
他们得用替身来完成一个动作。
他们得用替身来完成一个动作。
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