Only let not your hands be stained with the blood of your brethren.

只要注意，不让你的手染上弟兄的血。

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VISITORS to New York's Winter Antiques Show, from January 22nd through the 31st, are greeted with what appears to be a large stained-glass window in many shades of purple.

1月22日至31日，参观者来到纽约冬季古董展，一扇巨大的彩色玻璃窗迎面而来，多种紫色，深浅不一。

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Teeth with chronic caries will tend to be darker in color because the edges of the cavities become stained from normal eating and drinking.

牙齿慢性龋将趋于较深的颜色，因为边缘龋洞被正常吃的食物所染色。

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Scientists divide bacteria into so-called "gram positive" varieties like Strep, which lack rigid cell walls and can be stained with dye, and "gram negative" ones that have cell walls and aren't dyeable.

FORBES: Bleeding Edge