patchy
adjective uk/ˈpætʃ.i/ us/ˈpætʃ.i/
散落的，分布不均的，局部地区的
only existing or happening in some parts
The varnish is a little patchy on this table. 这张桌子上的清漆有点不匀。
The morning will start with some patchy rain/cloud/fog at first. 早晨开始会局部降雨／多云／有雾。
时好时坏的
sometimes good and sometimes bad
Matthew found the service extremely patchy. 马修发现服务时而极好，时而极差。