The only limits in life are those you impose on yourself.
韧性是通过克服挑战建立起来的。
柴油发动机可以使用植物油作为燃料,这将极大地促进使用该技术的国家的农业发展。
When will you ever make me proud?
Sometimes silence speaks louder than words.
The essence of mathematics lies in its freedom.
声音是一种天赋,但也是你每天必须努力练习的东西。