complementary distribution
美
英 
例句
The sounds that are in complementary distribution and also phonetically similar are allophones of the same phoneme.
处于互补性分布并且语音上相似的两个音是同一个音位的音位变体。位的音位变体。
When two sounds never occur in the same environment, they are in " complementary distribution" .
它指两个音从不出现在同一语音环境里的状况。