从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。

能源的未来在于传统能源与可再生能源之间的平衡。

The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.

Batteries are not just energy storage devices; they're enablers of renewable energy.

光是建筑中最重要的材料。