unevenly  
adverb uk/ʌnˈiː.vən.li/ us/ʌnˈiː.vən.li/
  (NOT EVEN)      
  不平整地,崎岖地;不均匀地;不连续地
in a way that is not level, equal, flat, or continuous
  The two boxers were unevenly matched. 两位拳击手强弱悬殊。 
 The main problem with regular backpacks is that the weight is unevenly distributed. 普通背包的主要问题是重量分布不均。 
 - More examples
 - The effects of global warming are unevenly spread across the globe.
 - There were a few dishes unevenly stacked on the counter next to the sink.
 - The benefits of progress have been distributed unevenly.
 
  (NOT GOOD)      
 (质量)不稳定地,时好时坏地
in a way that is not always of a good quality
  The team played unevenly for the first two months of the season. 在本赛季的前两个月,球队打得时好时坏。 
 They play well and sing unevenly. 他们演奏得很好,但演唱水平不稳定。 
 See: uneven
 - More examples
 - This unevenly acted production needs a more disciplined staging.
 - The play was performed unevenly by a cast of 36, of whom only eight are professional actors.
 - It is an unevenly successful, often predictable piece of theatre.