通过不正当手段夺取权力to snatch power

• 这是损害公众利益的窃权行为。

  This is a power grab that harms the interests of the public.

• 吴三桂为了窃权营私又阴谋拥立福王。

  To make a power grab for private gain, Wu Sangui plotted to enthrone the Prince of Fu.