strive verb
ADV. hard, mightily He strove very hard to remain calm. | desperately desperately striving for some sort of dignity | earnestly | always, constantly, continually
PREP. after striving after artistic beauty | against man striving against the elements | for The school constantly strives for excellence in its teaching. | towards companies that strive towards bigger profits
You can also check other dicts: strive (English, 中文解释 ), wordnet sense, Collins Definition