"Randomized experiments are the gold standard for causal inference, but they are not always feasible."
在催化中,有时最小的修改可以带来最大的突破。
In the end, we are all just trying to survive.
能源革命的核心是清洁高效,煤炭行业必须主动适应这一趋势。
The novel is a great discovery: far greater than Galileo's telescope or somebody else's wireless.