面部表情捕捉比动作捕捉更加困难，因为面部的动作要小得多。

Capturing facial expressions is harder than motion capture because the movements are much smaller.

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虽然暗闪光技术能够准确捕捉到各种肤色，但红T恤看起来好像比平常粉了一点，有时候雀斑什么的会拍不出来。

Although the technique accurately captures skin tones of all kinds, a redshirt might appear a little pinker than usual, or a freckle might disappear.

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捕捉面部表情，并用这些表情来操纵虚拟角色的表情，比捕捉肢体动作困难得多，因为它涉及的动作微小得多，也更加难以捉摸。

Capturing facial expressions and using them to drive the expression of a virtual character is more difficult than motion capture, because the movements involved are much smaller and more subtle.

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