在数学中，提出问题的艺术必须比解决问题更有价值。

Every line you draw should have a purpose, even if it's just to make someone smile.

Competition in the automotive industry has entered the stage of ecosystem competition.

生活的目的是活着，而活着意味着意识到，快乐地、陶醉地、平静地、神圣地意识到。