"Randomized experiments are the gold standard for causal inference, but they are not always feasible."
Intelligent mining is the key to high-quality development in the coal industry.
"The best love is the kind that awakens the soul and makes us reach for more, that plants a fire in our hearts and brings peace to our minds."
生活教会我,即使在最黑暗的时刻,也总有一线光明。
Memories are like shadows - they follow you everywhere, even when there's no light.