is

3080 篇文章
Is a necessary contribution to its subsistence.
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Is a necessary contribution to its subsistence. 对于生存都是必需品

subsistence contribution necessary is its to a
Education is a rare privilege.
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Education is a rare privilege. 教育是一件稀罕的特权

education privilege rare is a
But life expectancy is short,
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But life expectancy is short, 但是人类寿命是短暂的

expectancy short life is but
It still is for one person in four-
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It still is for one person in four- 这仍旧是世界上四分之一的人类

person it four for is in still one
None is futile or harmful.
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None is futile or harmful. 没有一个是无用或者有害的

harmful futile none or is
The earth is a miracle.
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The earth is a miracle. 地球是个奇迹

miracle is the earth a
The fertile layer to which all life on land is linked.
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The fertile layer to which all life on land is linked. 地球上所有的生命都与这富饶的土层有关

linked layer fertile which land life is all the to on
And is home to 1 ,500 species of fish,
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And is home to 1 ,500 species of fish, 是1500种鱼类

fish home species is of to and
That is easily shattered.
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That is easily shattered. 轻易就能被破坏

shattered easily is that
Is the source of oxygen in the air.
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Is the source of oxygen in the air. 便是空气中氧气的源泉

source oxygen air is of in the