种树的最佳时间是25年前，第二好的时间是今天。

Play is the language of childhood, and books should speak that language too.

One way of looking at speech is to say that it is a constant stratagem to cover nakedness.

Persistence and patience will always yield results.

Success comes from hard work and dedication.

智能化开采是煤炭行业高质量发展的关键。