艱苦的 angolul

painful▼(requiring labor or toil)
adjective
[UK: ˈpeɪn.fəl] [US: ˈpeɪn.fəl]

sweaty [sweatier, sweatiest]▼(strenuous)
adjective
[UK: ˈswe.ti] [US: ˈswe.ti]