The distance mechanism mainly concerns those euphemisms that formed with deictic methods.
距离委婉机制主要涉及指示语类委婉语。
参考来源 - 委婉语研究
指示的，直示的[亦作deiktic]
直接证明的，直接论证的，直证的
直证的
指示的
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deictic
n.a word specifying identity or spacial or temporal location from the perspective of a speaker or hearer in the context in which the communication occurs