中学和高中的时候是游泳部的，暑假每天就在学校的游泳池里游泳。
Was swimming when middle school and high school, summer day in the school's swimming in the swimming pool.
因此，当我在小学、中学和高中学习时，我的数学成绩在所有科目中都是最好的。
Thus when I studied in my primary, secondary, and high schools, my achievement of mathematics has been the best among all subjects.
2000多所中学和高中的教师参加了网络调查，研究者还与重点小组的教师们谈了话。
More than 2,000 middle and high school teachers took an online survey. Researchers also spoke with teachers in focus groups.
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