质量不是承诺;它是一种交付。
Quality is not a promise; it is a delivery.
煤炭企业要主动适应能源结构调整,加快转型升级。
判断两个λ表达式是否等价的问题是无法解决的。
The stock market is the only market where things go on sale and everyone runs out of the store.
The past is never dead. It's not even past.