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与牙龈相关的细菌能催发包括心脏病、中风以及糖尿病在内的很多疾病。 pJ^NA2
参考写法:Gum-related bacteria are known to be the catalyst for a host of problems, including heart disease, stroke and diabetes. :b/J\
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亮点表达:catalyst ,+1m`9}
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