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所以要持续发这两个音是很艰苦的,必需要在旁边加一个元音!
Because they're in nearly the same spot, it's hard to move between them without adding in a vowel!
youdao
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所以要持续发这两个音是很艰苦的,必需要在旁边加一个元音!
Because they're in nearly the same spot, it's hard to move between them without adding in a vowel!
youdao