Every 10 days or so, clean your filter equal parts white vinegar and warm water. Let the filter soak in the solution for an hour, then simply squeeze it dry before using.

每10天左右，用白醋兑温水清洗过滤器，把过滤器在兑好的液体里浸泡一个小时，在用之前把它弄干就可以了。

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They may be merely additions to existing product lines (the first cigarette with a filter tip, for instance) or improvements to existing products (a new whiter-than-white washing powder).

它们也可能仅仅是在现有的产品上增加了一些东西(比如推出带有过滤嘴的香烟)，或者是对现有的产品做出改良(比如一种能把衣服洗的更白的洗衣粉)。

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If black and white is too extreme for you, you can also try Photoshop's Photo filter tool and adding color tints.

如果黑白效果不是你的菜，你也可以通过PS的滤镜来增加色彩效果。

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The owner had window film applied, followed by white "sheer-weave" motorized solar shades to filter light but leave the view intact.

WSJ: Sheer Curtains, Solar Shades Are Popular Window Treatments

In Chapter restaurant, designed by Tokyo's Spin Studio, a winding iron staircase leads to a mezzanine of book-filled shelves. (It's mostly decorative, though select guests are invited to venture up there.) White perforated screens over the floor-to-ceiling windows filter the light.

WSJ: Stays: Conrad Beijing

Last May, Plastic Logic demonstrated a paper-like flexible screen capable of playing video in colour, which is achieved by placing a filter on top of the original black-and-white display.

BBC: Bend me, shape me: Flexible phones 'out by 2013'