She hesitated for a fraction of a second before responding.

她犹豫了一下才回应。

Here's how to eat like the stars, at a fraction of the cost.

这就是如何花少量钱却能像明星一样吃喝的方法。

The statistics reflect only a tiny fraction of the problem.

统计数据仅反映出极小部分的问题。

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

学生们掌握了小数、百分数和分数。