with no residual gum
没有残留的口香糖
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Although chewing gum is associated with increased saliva production in the majority of those with residual capacity, there is no evidence that gum is more or less effective than saliva substitutes.
虽然口香糖能增加大部分尚有残余唾液产生能力之人的唾液产生量，但是无证据显示口香糖的功效高于或低于唾液替代物。
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