血的教训使我们的头脑清醒了。
The lessons learned at the cost of blood helped to sober us.
更重要的是，有另外的使人清醒却矛盾的事实：网上消费者一直比线下消费者明显更缺乏价值。
What's more, there was the additionally sobering and confounding fact that an online consumer continued to be worth significantly less than an offline one.
这是一个使人清醒的结论，但是这些事故是可以避免的。
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