春天的色彩(Colours of spring)

如图所示，在北半球冬季结束时，一只敏锐的眼睛可能会发现一株正在开花的番红花，从而成为每年最早开花的花朵之一。虽然一些番红花也会在12月开花，但它们中的大多数都是冬天即将到来的常见迹象。众所周知，番红花主要是用作香料和染料的藏红花的来源。藏红花是世界上最有价值和最昂贵的香料之一。
原文：
A sharp eye might spot a flowering crocus, shown in today’s image, around the end of winter season in the Northern Hemisphere and thus becomes one of the first flowers to bloom every year. While some crocus species also bloom in December, most of them are a common indicator that winter is on its way out. Crocus is known mostly as a source of saffron that is used as a spice and dye. Saffron is one of the most valuable and expensive spices in the world.
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