frontiers

3 篇文章
Humans tried to extend the frontiers of their territory,
Walden 21
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Humans tried to extend the frontiers of their territory, 人类试图拓宽疆土

frontiers extend tried humans territory their of the to
Coasts are dynamic, dangerous frontiers...
Walden 21
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9 0 0

Coasts are dynamic, dangerous frontiers... 海岸是充满变化而又危险的前沿地带

frontiers dynamic coasts dangerous are
Coasts are dangerous and dynamic frontiers.
Walden 21
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9 0 1

Coasts are dangerous and dynamic frontiers. 海岸是危险而充满变化的前沿地带

frontiers dynamic coasts dangerous are and
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