According to a German professor, the soreness comes from straining your muscles in an uncommon way, for example, jumping on a bicycle for a ride, because you haven't ridden in a long time.
2019年12月四级真题（第一套）听力 Section C
In today's job market, it's not uncommon for job seekers to submit applications for many positions.
2018年6月四级真题（第一套）听力 Section C
英语六级真题
It in an uncommon infectious disease.
出自-2013年12月听力原文
In other experiments, Lupyan and Swignley found that uttering the name of a common product when on the hunt for it helped quicken someone's pace, but talking about uncommon items showed no advantage and slowed you down.
2017年6月六级真题（第二套）阅读 Section A
柯林斯高阶英汉双解学习词典释义
ADJ-GRADED
不平常的；罕见的
If you describe something as uncommon, you mean that it does not happen often or is not often seen.
1. not common or ordinarily encountered; unusually great in amount or remarkable in character or kind;
"uncommon birds""frost and floods are uncommon during these months""doing an uncommon amount of business""an uncommon liking for money""he owed his greatest debt to his mother's uncommon character and ability"
2. marked by an uncommon quality; especially superlative or extreme of its kind;
"what is so rare as a day in June"-J.R.Lowell"a rare skill""an uncommon sense of humor""she was kind to an uncommon degree"