Stuff is a very vague and nonspecific word.
stuff 是一个非常模糊且不具体词。
These nonspecific signs and symptoms of mild illness early in the clinical course of 2019-nCoV infection may be indistinguishable clinically from many other common infectious diseases, particularly during the winter respiratory virus season.
2019-nCoV 感染临床过程在临床上可能无法与许多其他常见传染病区分开来, 尤其是在冬季呼吸道病毒感染季节。