en_tn_lite_do_not_use/2th/03/08.md

we worked night and day

"we worked during the night and during the day." Here "night" and "day" are a merism and they mean "all the time." Alternate translation: "we worked all the time" (See: rc://en/ta/man/translate/figs-merism)

in difficult labor and hardship

Paul emphasizes how hard his circumstances were. Difficult labor implies work that requires great effort. Hardship implies they endured pain and suffering. Alternate translation: "in very difficult circumstances" (See: rc://en/ta/man/translate/figs-doublet)