This plant also comes in different colors, from yellow to black to green.

这种植物也有不同的颜色，从黄色到黑色再到绿色。

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Thick, yellow smoke pours constantly out of the chimneys at the steel plant in Katowice.

浓密的黄烟不断地从卡托维兹钢铁厂的烟囱里喷吐出来。

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Yellow rust does more than advance the timing of plant growth.

条锈病不仅仅是加速了植物的生长时机。

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He then grew many successive generations to ensure the plant would "come true" always have yellow branches and not revert to green, as some yellow plants do.

WSJ: The Inside Stories of This Season's New Plants--WSJ Weekend Gardener

Often the only cooling source in a manufacturing plant or warehouse was a ceiling fan, with a yellow ribbon tied to the blade so that people could see that it was really going around.

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Mr. Smits, who specializes in evergreens, noticed a yellow branch on an otherwise green arborvitae in his nursery, according to the plant patent application he filed.

WSJ: The Inside Stories of This Season's New Plants--WSJ Weekend Gardener