The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
我们必须在经济增长和环境管理之间取得平衡。
“在科学中,荣誉归于说服世界的人,而不是首先想到这个想法的人。”
If you want to fly, you have to give up what weighs you down.
当我听到文化这个词时,我伸手去拿支票簿。