在一个可可种植园里，豹猫在高耸的雨木下飞蹿而过，还有吼猴对着来访者尖叫。
In a cacao plantation, ocelots dart under towering saman trees and howler monkeys shriek at visitors.
吼猴们在地震一来就发出了警报呼叫。
The howler monkeys sounded an alarm call just after the earthquake.
为了帮助吼猴维持吼叫能力。
吼猴为什么要吼叫？
吼猴名字的由来，是因其每天所发出的大叫声或吼声。
Howler monkeys are named for the long loud cries, or howls, that they make every day.
雄性吼猴利用牠们的大嗓门去争夺食物，求偶，或宣示领土。
Male howler monkeys use their loud voices to fight for food, mates, or territory.
科学家把“黎明大合唱”给记录下来，并使用声音回放实验，来看看他们是否能引发出一个森林范围内的“猴吼”，来更深入地了解它们加入大合唱的原因。
The scientists recorded the dawn chorus and used playback experiments to see if they could trigger one of a forest-wide calls to find out more about why the animals joined in.
科学家把“黎明大合唱”给记录下来，并使用声音回放实验，来看看他们是否能引发出一个森林范围内的“猴吼”，来更深入地了解它们加入大合唱的原因。
The scientists recorded the dawn chorus and used playback experiments to see if they could trigger one of a forest-wide calls to find out more about why the animals joined in.
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