› Someone or something world-class is one of the best that there are of that type in the world:
a world-class athlete/performance
(world-class在劍橋高級學習詞典和同義詞詞典的解釋 ©劍橋大學出版社)
「每日一詞」
altruistic
showing a wish to help or bring advantages to others, even if it results in disadvantage for yourself