哭闹经常无明显原因。
发烧或无明显原因的生气可能是泌尿道感染所致。
Fever and fussiness without an apparent cause may result from UTI.
美国一项新的研究已发现占小比例的动脉斑块致命并引起心脏病发作或中风的原因,以及大多数其它动脉斑块是良性的、无明显危害的原因。
A new US study found why a very small proportion of arterial plaques become deadly and lead to heart attack or stroke and why the vast majority others stay benign and apparently do no harm.
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