spotty
adjective uk/ˈspɒt.i/ us/ˈspɑː.t̬i/
(SKIN)
UK（人的皮肤）多丘疹的，多粉刺的
used to describe a person with spots on their skin
I knew him when he was just a spotty youth. 在他还是个满脸粉刺的少年时，我就认识他了。
(NOT ALWAYS GOOD)
US (UK patchy)（质量）参差不齐的，有好有坏的
bad in some parts
She has a fairly spotty work record. 她的工作业绩时好时坏。
Sales have picked up a little but they're still spotty. 销售有所好转，但仍然起伏不定。