Coal companies must fulfill their social responsibilities while pursuing economic benefits.
我不是说唱歌手,我是一个数学的传奇。
The only limit to our realization of tomorrow will be our doubts of today.
耐心是一种美德,我正在学习耐心。这是一个艰难的课程。
质量不是一种行为,而是一种习惯。
A baker's hands are his most important tools.