second-order arithmetic 二阶算术
n order arithmetic progression n阶等差数列
subsystems of the second-order arithmetic 二阶算术的子系统
one-order difference arithmetic 一阶差分法
order arithmetic
订单算术
以上为机器翻译结果，长、整句建议使用 人工翻译 。
He also points out that, although British pupils are worse than their East Asian counterparts at arithmetic, they are better at higher-order mathematical skills such as geometry and handling data.
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