adj making great demands; requiring great effort 苛求的; 严格的; 需极努力的 *an exacting teacher 严师 * an exacting piece of work 费力的工作.
exacting
朗文当代英英词典(第4版)
adj demanding a lot of effort, careful work, or skill = demanding She was an exacting woman to work for. exacting standards/demands/requirements etc He could never live up to his father's exacting standards.