is

3080 篇文章
So, as long as this valuable harvest is properly controlled,
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So, as long as this valuable harvest is properly controlled, 所以 只要这种利润可观的 采摘行为得到适当控制

As soon as its nest is removed a bird will immediately build another.
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As soon as its nest is removed a bird will immediately build another. 燕窝被摘去后 金丝燕很快又会再吐一个

becomes a clear and obvious target and is asking for trouble.
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becomes a clear and obvious target and is asking for trouble. 立刻成为显眼的目标 很快便遭了殃

In the absence of plants this food chain is based on a continuous supply of bat droppings.
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In the absence of plants this food chain is based on a continuous supply of bat droppings. 在缺少植物的情况下 这里的食物链 完全依赖供应不断的蝙蝠粪便

This hundred metre high mound is made entirely of bat droppings -
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This hundred metre high mound is made entirely of bat droppings - 这堆100多米高的东西 全都是蝙蝠的排泄物

Its surface is covered by a thick carpet of cockroaches,
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Its surface is covered by a thick carpet of cockroaches, 地面上爬满了密密麻麻的蟑螂

This is the biggest underground river passage in the world,
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This is the biggest underground river passage in the world, 这是世界上最大的地下河通道

its course is altered.
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its course is altered. 就会改变路线

Limestone is composed of minerals derived from marine shells and corals,
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Limestone is composed of minerals derived from marine shells and corals, 石灰岩由海螺和 珊瑚中的矿物沉积后形成

so although this rocky escarpment in the United States is now hundreds of metres above sea level
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so although this rocky escarpment in the United States is now hundreds of metres above sea level 所以 尽管美国境内的这座石壁 如今矗立在海平面以上几百米高的地方