这一切引发了一个问题：如果只是因为有个故人可以让我们道歉，那我们是否应当致歉？
All this raises the question: Just because there is someone from our past we could apologize to, should we?
那我们是否可以通过投票来确定什么是最好的艺术呢？
So could we figure out what the best art is by taking a vote?
那我首先要搞清楚我车子的胎压是否正常，这样我可以进一步提高经济效益。
RC: I would make sure my tires were at the right air pressure so I could improve my fuel economy.
第二，如果改变了睡眠习惯，那我们是否可以改变饮食行为和体重变化的过程？
And second, if we change sleep patterns, can we change eating behavior and the course of weight change?
第二，如果改变了睡眠习惯，那我们是否可以改变饮食行为和体重变化的过程？
And second, if we change sleep patterns, can we change eating behavior and the course of weight change?
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