Years of being an underpaid and underappreciated factory worker had made him into a querulous, bitter old man.
Years of being an underpaid and underappreciated factory worker had made him into a querulous, bitter old man.
多年来身为一个低收入、低地位的工厂劳工，使他成为一个爱发牢骚、满腹委屈的老头。