1.These appear brightly coloured and attractive on the screen, whereas less profitable options are made to look manky, a slang word meaning dirty and unattractive.

利润高的上显得色彩鲜艳、有吸引力，而利润低的选项则看起来很脏，manky是一个俚语，是肮脏和没有吸引力。

2.Something which is profitable makes a profit, or is likely to make money. Manky is slang for dirty and unattractive.

profitable事物能够盈利，或者可能赚钱。Manky 是俚语，是肮脏和没有吸引力。