只听过重疾保险、轻症保障,最近又听到了&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;ldquo;中症&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;rdquo;,什么是中...