韦伯说，这个过程极其困难和昂贵，但技术已经进步了。
The process was extremely difficult and expensive, says Webber, but the technology has moved on.
韦伯说，对相应演员的画面重现即使再逼真，也永远不可能与其一模一样。
A recreation, however lifelike, will never be indistinguishable from a real actor, says Webber.
韦伯说，他们的研究是根据旧的、需要修改的数据进行的。
Webber says that the study is based on old data badly that needs to be revised.
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