Weight losses of deciduous leaves were larger than those of evergreen leaves during two years.
两年间落叶树种叶子的重量损失大于常绿树种。
Under foot the leaves were dry, and the foliage of some holly bushes which grew among the deciduous trees was dense enough to keep off draughts.
脚下的树叶已经干枯了，在这块落叶林中间，长着一些冬青灌木，它们稠密的树叶足可以挡风。
You've probably heard that leaves of deciduous trees change color in autumn because they lose their green chlorophyll molecules, allowing the underlying yellow-orange pigments to shine through.
你可能听过这种说法：落叶树在秋天变色是因为它们失去了令它们绿的叶绿素，于是下层的黄橙色素就显出了颜色。
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