有幸地，我和其他三位同学一起被选中去参见数学比赛。

Luckly, There students and me were appointed to enter maths exam competition.

youdao

平面点集作为一种常见数学模型，其上常做的运算是求其凸包和三角网格。

Two kinds of common operation on the set of nodes in a plane are calculating its convex hull and triangulation, and usually the algorithms are studied independently.

youdao

此外，与ContentMathML不一样，对于常见数学运算符没有预定义的元素，因为核心openmath语言只定义基本结构。

Also, unlike Content MathML, there are no predefined elements for common mathematical operators, since the core OpenMath language just defines the basic structure.

youdao

此外，与ContentMathML不一样，对于常见数学运算符没有预定义的元素，因为核心openmath语言只定义基本结构。

Also, unlike Content MathML, there are no predefined elements for common mathematical operators, since the core OpenMath language just defines the basic structure.

youdao