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2047 篇文章
When competitors are evenly matched as they are here,
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When competitors are evenly matched as they are here, 同级别的参赛者在此公平竞争

These are actually subordinate male ibex,
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These are actually subordinate male ibex, 这些其实是次级别的公羱羊

but their fights are nonetheless serious.
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but their fights are nonetheless serious. 但它们的战斗依然十分激烈

These are Nubian ibex
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These are Nubian ibex 这些是努比亚羱羊

and they are squaring up for a duel.
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and they are squaring up for a duel. 它们正摆好架势准备激战

And when resources are limited,
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And when resources are limited, 当资源有限的时候

The pollen and nectar with which these flowers are loaded
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The pollen and nectar with which these flowers are loaded 这些花中装满了花粉和花蜜

and are on their way north to the southern United States.
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and are on their way north to the southern United States. 正向北飞往美国南部

But birds are not the only animals to benefit from the presence of the cacti.
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But birds are not the only animals to benefit from the presence of the cacti. 不过鸟并非唯一从仙人掌那里 获得好处的动物

are ready to take full advantage of it.
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are ready to take full advantage of it. 准备充分利用雨水