leaf-fall

The fall of one leaf is enough to tell coming of autumn.

一叶知秋.

《简明英汉词典》

The effect of leaf fall decomposition for 8 tree species on soil microorganisms was studied.

研究了8个树种凋落叶分解对土壤微生物数量和组成的影响.

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Her beauty is at the fall of the leaf.

她的美貌凋谢了.

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And they say the trees reduced odors by18%. For the first row nearest the fans, they generally suggest using trees that lose their leaves in the fall or trees with waxy leaf surfaces.

而且他们认为，树木可以使异味降低18%。他们建议，在最靠近风扇的第一行种植秋天落叶或树叶表面有蜡层的树木；

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This colorful garden throughout the year Coleus, especially in autumn when the walk through the gardens, that glowing red, glistening yellow fruit of the autumn leaf fall is even more beautiful.

此园一年四季彩叶缤纷，尤其在秋高气爽之时，漫步园中，那红彤彤、黄澄澄的秋叶秋果更是美不胜收。

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Leaf fall The shedding of leaves , usually associated with a fall in AUXIN concentration.

落叶:即树叶的脱落, 常伴植物激素浓度的降低.

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The 28 ( leaf ) fall from the trees.

叶子从树上掉下来了.

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The life shall fall as a leaf and be shed as the rain.

你的生命要象秋雨一样地淋沥,象秋叶一样地飘零.

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