the

9806 篇文章
The effect is so spectacular and so extensive
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The effect is so spectacular and so extensive 这种壮观的景象发生的地域之广

extensive effect spectacular is the so and
The threat of winter frost is not the only reason for trees to shed leaves.
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The threat of winter frost is not the only reason for trees to shed leaves. 寒冬的威胁不是树木落叶的唯一原因

threat reason frost shed leaves trees only not for is of winter the to
These forests stand in the tropics.
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These forests stand in the tropics. 这片森林在热带地区

stand tropics forests these in the
Then, after a few months, the days begin to shorten again
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Then, after a few months, the days begin to shorten again 几个月后,白昼又开始缩短

shorten then begin few days after months again the to a
and the trees must shut down and shed their leaves in preparation for the cold dark time ahead.
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and the trees must shut down and shed their leaves in preparation for the cold dark time ahead. 树木开始减缓代谢,树叶开始凋零, 以准备迎接寒冬的到来

ahead preparation shut cold shed leaves trees must time their down for dark in the and
Great tracts of North America flush red as the season progresses.
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Great tracts of North America flush red as the season progresses. 随着季节的变换 北美的大片地域万山红遍,层林尽染

progresses tracts flush red great season america north of as the
The spring blooms of the deciduous woodlands have no equivalent in either the great conifer forests, or the tropical jungles.
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The spring blooms of the deciduous woodlands have no equivalent in either the great conifer forests, or the tropical jungles. 春--使落叶林与针叶林和雨林没有任何相似性

conifer woodlands jungles equivalent blooms tropical great deciduous forests or either spring no of in have the
Within a matter of weeks the canopy has closed and only a few wheeling shafts of light penetrate the woodland.
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Within a matter of weeks the canopy has closed and only a few wheeling shafts of light penetrate the woodland. 再过几个星期,树冠层重新遮蔽天空, 透到地面的只有丝丝缕缕的阳光

closed wheeling matter shafts penetrate within weeks woodland canopy few only has light of the and a
In the treetops, the broad leaves rapidly expand to their full size to make the most of summer while it lasts.
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In the treetops, the broad leaves rapidly expand to their full size to make the most of summer while it lasts. 在树梢 树叶很快生长开来并保持这个状态一直到夏末

treetops expand full while size lasts most broad leaves make summer rapidly their it of in the to
With no leaves overhead, the rays of the sun strike the forest floor directly
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With no leaves overhead, the rays of the sun strike the forest floor directly 由于没有树叶遮蔽,阳光可以直射到森林地表上

overhead floor leaves forest rays directly strike with no of sun the