Clear [1] and dark[ƚ]are allophones of the same one phoneme /1/.They never take the same position in sound combinations, thus they are said to be in c() distribution.
正确答案:complementary
答案解析:有

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Clear [1] and dark[ƚ]are allophones of the same one phoneme /1/.They never take the same position in sound combinations, thus they are said to be in c() distribution.

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