The euphemistic expressions involving metaphor are capable of downplaying the negative and unpleasant aspects of the tabooed things, which contributes to the indirectness of euphemism.

• 所以通过概念隐喻形成的委婉语可以掩盖被禁忌概念中反面的、令人不愉快的方面，从而达到间接的委婉效果。