We purify the water we drink with a water filter designed for the astronauts' use in space.

我们用滤水器净化饮用水，而滤水器是专为航天员在太空中使用而设计的。

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The original design of the ceramic filter came from a chemist in Guatemala,Fernando Mazariegos.

VOA: special.2009.06.22

Ultimately, we need a filter or a lens to talk about then what is ultimately in control.

最终，我们需要一个视窗，一个镜头,来讨论什么是最终的控制者。

普林斯顿公开课 - 人性课程节选

In simple terms, think of snow or ice as a filter.

VOA: special.2010.01.05

Light-emitting chemicals used in the filter help scientists measure how many bacteria are bound onto the antibodies.

BBC: Speedy 'burger bug' test

Thanks to some impressive Click-style crowd-sourcing, we have a slightly better idea of whether or not we really are all living in the filter bubble.

BBC: Click listeners test 'filter bubble'

Numi now packs organic tea in biodegradable filter paper.

FORBES: UPSVoice: From Tuna To Tea, 'Greenwrapping' Makes Food Sustainable Beyond Ingredients