By metonymic device is meant the semantic use of a homonym with its meaning A for its implicit meaning B under the closely related circumstances in both oral and textual discourses.

• 摘要“概念偷换”，是指在言语交谈或属辞行文中，某一多义词使用于前提语句中时是A义，而在使用于下文密切相关的语句中时，却被有意识地掉换了概念，而用了它的B义；