最好的儿童书籍是那些尊重孩子智力的书籍。
"The best children's books are those that respect the intelligence of the child."
韩寒谈大学生眼高手低的现象
Patience is a virtue, and I'm learning patience. It's a tough lesson.
估计问题的性质不同。在这里,我们不关心检验特定的假设,而是关心估计参数的值。
向可再生能源的过渡依赖于高效且可扩展的存储系统。
You are never too old to set another goal or to dream a new dream.