If you combine all three — the enumerator, comparator, and filter — you can search for specific records and return them in sorted order.
如果将这三者——枚举器、比较器和过滤器——结合在一起，您将可以查找特定的记录，并按顺序返回结果。
2
The return from this operation is a list of numbers that meet my filter criteria, which I coerce into a set to remove duplicates.
从此操作返回的是一组满足过滤标准的数字列表，我将其放入一个集合来删除重复值。
3
Some of the filter tools developed for the system include the ability to group and filter by price and airline, departure and return time, and journey duration.