Students had to complete a difficult mental math task in front of the same upper-year students.
学生们必须在同一批高年级学生面前完成一项艰巨的心算任务。
The heart-stopping moment was quickly followed by mental math.
在这个惊心动魄的时刻之后，我很快就开始在内心计算。
That's the promise of Nintendo's Brain Age, which claims to “help train your memory and keep your mind sharp” through reading exercises, math puzzles, and other mental gymnastics.
这正是任天堂公司的《大脑时代》的承诺，这款游戏声称，阅读练习、数学题及其他脑力体操，可以“有助于训练你的记忆力，保持思维敏锐”。
Other research quoted by the Telegraph article seems to suggest that some mental faculties improve with age. Our vocabulary and decisionmaking skills increase, though we lose our math skills.
每日电讯所引用的其他研究也似乎表明，某些精神力确实随着年龄增长而增强。我们的词汇和决断力会变大变强，虽然我们也会逐渐失去算术的能力。
Secondly, the author himself has a study on girl students' math study and their mental condition in the form of interview and questionnaire.
再以访谈和调查问卷的形式了解学校部分男女生的数学学习现况，学习心理状况等；
I expect my mental skills to be rusty, but I'm not prepared for the results of my first math practice test.
虽然我知道自己已是大不如前，但第一次数学模拟测验的成绩还是让我吓了一跳。
I expect my mental skills to be rusty, but I'm not prepared for the results of my first math practice test.
虽然我知道自己已是大不如前，但第一次数学模拟测验的成绩还是让我吓了一跳。
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