计较小事 meaning in English

fuss over trifles

" my touchiness about trifles , dear master and mistress .
“都怪我太爱计较小事了，亲爱的主人主妇。 ”
Because the chemist was so temperamental that he had an entire department in upheaval . none of the other cerned with perceived slights that he spent all his time fuming and accomplished nothing
因为这位化学家很容易发脾气，整个部门被他搞得一团糟，没有人愿意和他共事；而他也因为太计较小事而经常怒气冲冲，以致什么成就都没有。