I never know how to maneuver the mask with double face mask.

我真是不知道怎么戴两个口罩。

Otherwise, filmmakers have to make sure to avoid the double's face, as seen in this mirror shot from 1995's " La Haine." And this technique is also prone to human error.

否则，电影制作人必须确保避开替身的脸，正如 1995 年的“La Haine” 中的这面镜子所见。 而且这种技术也容易出现人为错误。