Roses appear naturally in many shades of red, pink, yellow and white, but lack the natural ability to produce blue pigments.

天然的玫瑰有很多颜色，比如红色、粉色、黄色和白色，但是就是缺少生成蓝色素的能力。

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Blue ice is the result of compressed snow and a lack of air bubbles.

蓝冰是由于被压缩后的雪以及缺少气泡产生的结果。

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It's tempting to shrug and wonder whether the legacy of new green initiatives will be as lackluster as the "green Olympics" - or to feel blue at the lack of promised "blue skies."

你不由得耸耸肩，心想新的绿色倡导会不会像“绿色奥运”一样雷声大雨点小——或由于没有实现允诺过的“蓝天”而让人心头一片灰蒙蒙。

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Belgian blue cows, which lack the myostatin gene, are so covered with bulky, rippling muscles that they look like something out of a bovine superhero cartoon.

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That can be characterized by sort of an acute respiratory distress, such as difficulty in breathing, sweating, high temperature, and turning blue, basically, from lack of oxygen.

CNN: "The Secret Life of Germs" author Philip Tierno

Then, with the Rangers on the periphery of the conference's playoff picture in early April and Tortorella bemoaning the team's lack of depth, Sather sent forward Marian Gaborik to the Blue Jackets for three players.

WSJ: New York Rangers: Rangers Fire Tortorella