1. In mathematics, the set of natural numbers, such as 1, 2, 3, is an example of a numerable set.
数学中的自然数集合，如1、2、3等，是一个可数集合的例子。

2. The numerable items in the grocery store make it easier for customers to keep track of their purchases.
杂货店里的可计数商品让顾客更容易追踪他们的购买物品。