【正确答案】Coarticulation is a kind of phonetic process in which simultaneous or overlapping articulations are involved．Coarticulation can be further divided into anticipatory coarticulation and perseverative coarticulation．

【答案解析】[解析] 本题考查协同发音的概念。话语是一个连续的过程，所以发音器官不是从一系列分离的步骤中，从一个音段移到下一个音段。实际上，语音会持续地受到他们临近音的影响。当涉及到同时或重合的发音时，我们称这些过程为协同发音。协同发音又被分为逆化协同发音和重复性协同发音。