英文phrase..

改善的空間---the space improved
財政預算案---the case of financial budget
上街示威---demonstrate in the street
貧富懸殊---the gulf between rich and poor is enormous

改善的空間 -> room for improvement
財政預算案 -> The Budget
上街示威 -> to hold a demonstration
貧富懸殊 : for this phrase, there is no words in english that has the exact meaning, but what you may say is "the distance between the poor and the rich is great"