It is a goal more difficult than excellence in arithmetic or soccer.
这个目标，比学好数学或踢好足球更难。
He is behind others in reading, but a long way ahead in arithmetic.
他在阅读方面比别人落后，但在算术方面遥遥领先。
The little boy can already do simple problems in arithmetic.
那个小男孩已经能做简单的算术题了。
He's behind the others in reading but a long way ahead in arithmetic.
他在阅读方面不如别人，但算术却遥遥领先。
他擅长算术。
You must learn to add and subtract in arithmetic.
学算术要学会加法和减法。
You must learn to add and subtract in arithmetic.
学算术要学会加法和减法。
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