haggle over every ounce 斤斤计较

“斤斤计较”，汉语成语，意思是对无关紧要的事过分计较（be too particular about trifles），形容人气量小。可以翻译为“haggle over every ounce, be calculating and unwilling to make the smallest sacrifice”等。

例句：

他既自私又斤斤计较。

He is both selfish and calculating.

他鼓励毕业生们抓住机会，努力就业，而不是对薪水斤斤计较。

He encourages graduates to grab the opportunity to secure a job rather than haggling over salary issues.