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The coal industry must evolve or risk becoming obsolete. Adaptation is the key to survival.

我們都害怕——為我們的信心，為未來，為這個(gè)世界。

The essence of causal inference is to go beyond the data and ask what would happen if we intervene.

如果您不愿意對(duì)它們負(fù)責(zé)，那就不要有好主意。