As daylight dwindles and temperatures drop in this forest in Perthshire, Scotland, beech trees (Fagus sylvatica) switch into power-saver mode.

当森林里的白天在减短，气温在降低时，苏格兰佩思郡的山毛榉(Fagussylvatica)就进入了一种保存能量的状态。

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Beech wood (Fagus SPP.) sawn or chipped lengthwise, sliced or peeled, whether or not planed, sanded or finger-jointed, of a thickness exceeding 6 mm.

山毛榉(山毛榉属)材，经纵锯或纵削、平切或旋切，不论是否经刨平、砂磨或端接，其厚度超过6公厘者。

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Beech wood (Fagus SPP.) sawn or chipped lengthwise, sliced or peeled, whether or not planed, sanded or finger-jointed, of a thickness exceeding 6 mm.

山毛榉(山毛榉属)材，经纵锯或纵削、平切或旋切，不论是否经刨平、砂磨或端接，其厚度超过6公厘者。

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