The scientific level of a country can use it to use mathematics to measure.
一个国家的科学水平可以用它消耗的数学来度量。
System designed for secondary school level mathematics.
专为中学水平的数学系统。
Actually, I am good at teaching mathematics at elementary level.
实际上，我很擅长教授基础数学。
Actually, I am good at teaching mathematics on elementary level.
第二，如果他是个小学生就更好了。实际上，我很擅长教授基础数学。
Actually, I am good at teaching mathematics on elementary level.
第二，如果他是个小学生就更好了。实际上，我很擅长教授基础数学。
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