Middle school is an important age because students have enough math capability to solve advanced problems, but they haven't really decided what they want to do with their lives.
中学是一个重要的年龄段，因为学生有足够的数学能力来解决高级问题，但他们还没有真正决定他们在生活中想做些什么。
To do that, investigators had volunteers lie in a brain scanner and solve math problems.
在研究中，志愿者按照研究者的要求躺在脑部扫描仪中解决数学问题。
You probably don't need to worry unless you start forgetting a good portion of your vocabulary or losing the capacity to do easy math problems.
你完全不用担心，如果你没有开始遗失你的一份词语，或是失去做简单数学题的能力。
Do you find that you struggle with solving math problems?
你发现你一直在和数学问题“作斗争”吗？
Do you find that you struggle with solving math problems?
你发现你一直在和数学问题“作斗争”吗？
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