艰苦奋斗 living a simple life ; hard work; to work hard ; Thrifty & Perseverance

艰难梭菌 Clostridium difficile ; c-diff

艰苦创业 be hardworking and enterprising ; Hard work ; Entrepreneurship

共克时艰 our joint response to challenges

艰难 Difficult ; hardship ; hard ; troublesome

艰难时世 Hard Times ; Malas Temporadas

艰苦奋斗精神 working hard

艰苦 Hard ; difficulty ; hardship

艰难困苦，玉汝于成 "Adversity makes one stronger; just as polishing makes jade finer"

艰苦边远地区津贴增长机制 the mechanism for increasing allowances for working in hardship and remote areas