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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。 XT{1!I(
参考写法:Gum-related bacteria are known to be the catalyst for a host of problems, including heart disease, stroke and diabetes. NxNR;wz>l
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亮点表达:catalyst 8 PXleAn
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catalyst 是名词,意思是 “触媒,催化剂”,在英文中用来比喻“触发因素,促进因素”,生动形象。 ]!YzbvoR
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