onerous

繁重的任务

describes a piece of work that is very demanding or tedious

一项困难且令人不快的任务

describes a heavy and difficult load or responsibility

繁重的责任

describes the state of being accountable for something very difficult

形容对某件非常困难的事情负责的状态

繁重的责任

describes a moral or legal obligation that is very difficult to perform

形容非常难以履行的道德或法律义务