The students had a grasp of decimals, percentages and fractions.

学生们掌握了小数、百分数和分数。

柯林斯例句

A grasp of mundane affairs is genuine knowledge; an understanding of worldly wisdom is true learning.

世事洞明皆学问, 人情练达即文章.

《现代汉英综合大词典》

You will have to gradually gain a grasp of statistics and planning.

你得逐渐掌握统计还有计算.

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I soon have a grasp of what is going on.

我很快就明白了正在发生什么事情.

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