纪录片《我们的地球》 第60期 淡水资源(17)

When rivers finally reach the sea,

当江河最终汇入大海时

they slow down, release their sediment¹ and build deltas².

水流减缓，留下大量泥沙，堆成了三角洲

In Bangladesh, the Ganges and Brahmaputra rivers join to form the world's biggest.

在孟加拉国，恒河与雅鲁藏布江的交汇处形成了世界上最大的三角洲

Every year, almost 2,000 million tonnes of sediment eroded³ from the Himalayas is delivered to the ocean.

每年大约有20亿吨泥沙在此沉淀，从喜马拉雅山脉上崩塌下来的土石最终归于大海

At the delta's mouth, the largest mangrove⁴ forest in the world, the Sunderbans.

三角洲河口地带有一片世界上最大的红树林，孙德尔本斯红树林。

These extraordinary forests spring up throughout the tropics in these tidal zones where rivers meet the sea.

这些特殊的树林遍及整个热带地区的潮间带，那里正是河流的入海口

Crab-eating macaques are mangrove specialists.

食蟹猴是红树林的特有物种

In Indonesia, these monkeys have adopted a unique amphibious lifestyle.

在印度尼西亚，这些猴子过着一种独特的双栖式生活

They fish out fallen food.

它们拣食落在水中的食物。

The troop also uses the waters to cool off during the heat of the day.

在白天酷热难耐之时，猴群会利用水来给身体降温。

1 sediment   

n.沉淀，沉渣，沉积(物)

参考例句：

• The sediment settled and the water was clear.杂质沉淀后，水变清了。
• Sediment begins to choke the channel's opening.沉积物开始淤塞河道口。

2 deltas   

希腊字母表中第四个字母( delta的名词复数 )； （河口的）三角洲

参考例句：

• Tidal channels, deltas, and washover fans are characteristically associated with offshore bars. 潮汐水道、三角洲和冲刷扇典型地与滨外砂洲伴生在一起。
• I know many of the early civilizations prospered on deltas. 我知道很多古老的文明都是在三角洲上蓬勃发展起来的。

3 eroded   

adj. 被侵蚀的，有蚀痕的 动词erode的过去式和过去分词形式

参考例句：

• The cliff face has been steadily eroded by the sea. 峭壁表面逐渐被海水侵蚀。
• The stream eroded a channel in the solid rock. 小溪在硬石中侵蚀成一条水道。

4 mangrove   

n.(植物)红树，红树林

参考例句：

• It is the world's largest tidal mangrove forest.它是世界上最大的红树林沼泽地。
• Many consider this the most beautiful mangrove forest in all Thailand.许多人认为这里是全泰国最美丽的红树林了。