相当: equivalent to, appropriate, considerably, to a certain extent, fairly, quite...
庆祝: to celebrate...
数学: mathematics, mathematical...
伸: to stretch, to extend...
百合: lily...
质量: quality, (physics) mass...
俄语: Russian (language)...
孤立: isolate, isolated...
俗语: common saying, proverb, colloquial speech...
排练: to rehearse, rehearsal...
