纪录片《美丽中国》 第7期 锦绣华南（7）

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A clue tothe source ofthe guano can be heard above the noise of the river.

鸟粪的源头能听到河水上空的鸟鸣

The sound originateshigh upin the roof of the cave.

噪音因为山洞而被放大

The entrance isfull of swifts.

入口处聚满了雨燕

They are very sociable¹ birds,

他们是社交性动物

more than 200,000 of them share this cave in southern Guizhou province.

约200000多的共享贵州南部的洞穴

The biggest swift colony in China.

中国最大的雨燕栖息地

These days, Chinese house swifts mostly nest in the roofs of buildings,

如今 中国的家燕多数将巢穴建在建筑物的屋顶

but rock crevasses² like these were their original home

但其实在房屋被发明出来之前

long before houses were invented

这样的岩缝才是他们原本安家的地方

Though the swifts depend on the cave for shelter,

尽管雨燕依靠洞穴遮蔽

they never stray further thanthe limits ofdaylight

他们却必定在日落前归巢

as their eyes can't see in dark.

因为他们的眼睛无法在黑夜中看清事物

However, deep inside the cavern³

然而洞穴深处

are the creatures are better equipped

是一群更适应地下

for subterranean⁴ life.

隐秘生活的居民

A colony of bats is just waking up,

一群蝙蝠刚刚醒来

usingultrasonic squeaksto orientate⁵ themselves in the darkness.

他们运用超声波在黑夜中确定自己的方位

Night is the time to go hunting.

夜晚是狩猎时间

1 sociable   

adj.好交际的，友好的，合群的

参考例句：

• Roger is a very sociable person.罗杰是个非常好交际的人。
• Some children have more sociable personalities than others.有些孩子比其他孩子更善于交际。

2 crevasses   

n.破口，崩溃处，裂缝( crevasse的名词复数 )

参考例句：

• Splays are commonly formed by currents from crevasses in levees. 嗽叭形堆积通常由堤防决口的洪流所形成。 来自辞典例句
• The upper surface of glacier is riven by crevasses. 冰川的上表面已裂成冰隙。 来自辞典例句

3 cavern   

n.洞穴，大山洞

参考例句：

• The cavern walls echoed his cries.大山洞的四壁回响着他的喊声。
• It suddenly began to shower,and we took refuge in the cavern.天突然下起雨来，我们在一个山洞里避雨。

4 subterranean   

adj.地下的，地表下的

参考例句：

• London has 9 miles of such subterranean passages.伦敦像这样的地下通道有9英里长。
• We wandered through subterranean passages.我们漫游地下通道。

5 orientate   

v.给…定位；使适应

参考例句：

• The explorer climbed a tree in order to orientate himself.那位勘探者为了确定他所在的地点爬到了一颗树上。
• The mountaineers found it difficult to orientate themselves in the fog.登山的人在浓雾中难以确定自己的方位。