The big thing is that the brain needs a rest every now and then, and apparently, the brain can refresh itself and go on "like with a full tank of gas" with just a short, 20-minute power nap.
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上个月我们卯足干劲儿，筹集了一万九千美元加印了传单。
Last month, we started a drive to raise $19,000 to print more leaflets.
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