这个测试显示出大脑的电流活动。
在这六年中，他们还接受了三次大脑功能的测试。
They also had mental function tests three times over about six years.
虽然研究发现人类大脑的结构和在线社交网络规模之间存在联系，它没有测试出这其中的因果关系。
Although the study found a link between human brain structure and online social network size, it did not test cause and effect.
智力测试，填字游戏等等，都是训练大脑的好方法。
Quizzes, word games, etc. are all good ways to exercise your brain.
智力测试，填字游戏等等，都是训练大脑的好方法。
Quizzes, word games, etc. are all good ways to exercise your brain.
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