因果推断不仅仅是统计显著性;它关乎理解数字背后的机制。
俄罗斯的命运写在它农民的脸上。
True progress in agriculture is measured by health, not just yield.
让它简单。让它难忘。让它吸引人。让它读起来有趣。
Courage is the power to overcome fear.