占便宜

❶gain advantage by unfair means;profit at others’expense;take an undue advantage;profiteer
❷advantageous;favorable
利用职权占国家和群众的便宜misuse one’s power and position to “fatten” on the state and the people/占小便宜gain petty advantages;secure small advantages at others’expense/占了便宜卖乖show off one’s cleverness after gaining an advantage