No great musician confuses a symp h ony with th e printeds h eet of music.

任何伟大的音乐家都不会将一首交响曲和一张印刷的乐谱相混淆。

Infection causes a wide spectrum of disease, from mild symp to ms to severe illness and death.

感染导致疾病有不同的表现，从轻微症状到严重发病直至死亡。