凋落

But, snuggling into its cosy hidey-hole, the tawny owl hasn't twigged that its cover has been blown by the fall of autumn leaves.

当秋天到来，树叶纷纷凋落，它们的毛色变成和树干一样黄褐色来帮助它们隐藏。

Decomposition of mixed foliar litters from the four typical plantitions in upper reaches the of the Minjiang River was studied by using the litterbag method.

摘要采用尼龙分解袋的方法，对四川岷江上游地连香树、云南松、糙皮桦和云杉4种典型林凋落叶进行田间混合分解试验。