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Lichen

“Lichen” 是一个名词,指代一种由真菌和藻类(或蓝细菌)共生形成的特殊生物体。它们通常以灰色、黄色或绿色的斑块状生长在树皮、岩石或旧墙上。

  1. “The ancient rocks were covered in a thick layer of grey lichen.” (古老的岩石上覆盖着一层厚厚的灰色地衣。)
  2. “Lichen is a very slow-growing organism that can live for hundreds of years.” (地衣是一种生长非常缓慢的生物,可以存活数百年。)
  3. “The presence of certain types of lichen indicates that the air is clean.” (某些种类的地衣存在表明空气很清新。)

源自希腊语 “leikhēn”,原指地衣或类似的皮肤病。

无前缀和后缀。

地衣是自然界中著名的“共生”案例。此外,它们对空气质量非常敏感,特别是二氧化硫,因此常被科学家用作空气污染的生物指标。在荒野生存中,某些种类的地衣也可以作为紧急情况下的食物来源。

  • 形容词: lichenous (地衣状的,长满地衣的)

联想 “Like” (喜欢) + “hen” (母鸡)?或者联想它“喜欢” (like) 贴在石头上。发音 “Ly-ken” 听起来像 “liken” (比作),想象它把岩石“比作”了自己的家。

“In the deep silence of the forest, the only decoration on the old oak tree was the bright orange lichen that clung to its north side. To the scientist, this lichen was a sign of health, a tiny partnership working perfectly in the clean mountain air.” (在森林深邃的寂静中,老橡树唯一的装饰就是紧贴其北侧的亮橙色地衣。对科学家来说,这些地衣是健康的标志,是清洁山间空气中完美运作的微小伙伴关系。)