1. 少量;小份;一点儿
A fraction of something is a tiny amount or proportion of it.
fraction
e.g. She hesitated for a fraction of a second before responding...
她在回答之前犹豫了一下。
e.g. 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。
2. 分数
A fraction is a number that can be expressed as a proportion of two whole numbers. For example, ½ and ⅓ are both fractions.
e.g. The students had a grasp of decimals, percentages and fractions.
学生们掌握了小数、百分数和分数。