is

3080 篇文章
The colony is well-defended. There are no easy pickings here.
Walden 21
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19 0 0

The colony is well-defended. There are no easy pickings here. 雪雁的领地防御完善,很难让狐狸轻松下手

well-defended colony easy pickings here no is the are there
Sneaking up unnoticed is impossible.
Walden 21
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19 0 1

Sneaking up unnoticed is impossible. 出其不意的偷袭很难奏效

sneaking impossible unnoticed up is
It's a long way to travel, but for a short period, the tundra is the ideal place for a grazer.
Walden 21
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19 0 2

It's a long way to travel, but for a short period, the tundra is the ideal place for a grazer. 北极的苔原虽然路途遥远, 但仍有短短的一段时间是食草动物的天堂

grazer period ideal short way long travel tundra place for is it's the to but a
Their marathon migration is almost 3,000 miles long
Walden 21
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19 0 1

Their marathon migration is almost 3,000 miles long 这场马拉松式的迁徙长达三千英里

marathon long migration almost miles their is
This is the Arctic tundra.
Walden 21
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19 0 1

This is the Arctic tundra. 这便是北极的苔原

tundra arctic is the this
Grass is not confined to the tropics.
Walden 21
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19 0 0

Grass is not confined to the tropics. 草不仅生长在热带地区

confined grass tropics not is the to
Beyond the limits of the last tree, the planet is barren and ice-locked.
Walden 21
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19 0 3

Beyond the limits of the last tree, the planet is barren and ice-locked. 在最后一批树木以外的地方, 处处是冰天雪地 一片荒芜

ice-locked limits beyond barren tree is of last the planet and
grass is almost indestructible.
Walden 21
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19 0 0

grass is almost indestructible. 几乎可以说 草是坚不可摧的

indestructible grass almost is
0ut in the open, communal calving is the safest way to have young.
Walden 21
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19 0 4

0ut in the open, communal calving is the safest way to have young. 在毫无遮挡的草原上若想安全地繁衍 最佳方法是集体照看

safest calving communal 0ut way open young is in have the to
one of the planet's great migrations is underway.
Walden 21
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19 0 3

one of the planet's great migrations is underway. 地球上规模最大的迁徙大军正浩浩荡荡地行进着

underway migrations planet's great is of the one