Cleaner Web filter mechanism that allows more pluggable filtering support without subclassing.

更干净的Web过滤机制，无需子类化就可支持更多的插件式过滤器。

youdao

While not strictly necessary, your pond can benefit from having a pump and biological filter to keep water cleaner.

虽然不是绝对必要，你可以受益于池塘有一个泵和生物过滤水保持清洁。

youdao

When removing multiple entries from a dictionary, it is cleaner and more efficient to use filter .

从一个字典删除多个条目时，使用filter会更简洁，更有效。

youdao

Just like the filter in a vacuum cleaner, however, the trap must be cleaned periodically.

FORBES: Clearing the Air