The emission charge is an effective method to internalize the externalized problem of environment.

排污收费是使环境问题外部性内在化的一种有效方法.

The choice of externalized communicative appellations is made on the basis of the politeness principle. Self-belittling and others-esteeming is the internal motivation.

外化亲属称谓语的选择基于礼貌原则，＂贬己尊人＂是其选择的内在依据；