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And they're not the only animals attracted to the clearing.
大象不是唯一被吸引到空曠地帶的動物。
Forest buffalos and red river hogs are also regular visitors.
森林水牛，紅河野豬，它們也是?？?。
As are bongos, which are very difficult to see outside these clearings.
邦戈羚羊也是除了在空曠地很難見到的動物。
All these large forest animals have come here
所有的這些森林動物來到這里，
to collect an essential element of their diet that lies buried beneath the mud.
收集埋在泥下的對身體有益的微量元素。
And the elephant's trunk is the perfect tool for reaching it.
象鼻可以說是得到它的完美工具。
To get what they seek, the prospecting elephants must first blow away the covering layer of silt.
要找到想要的東西，大象首先要驅走覆蓋著的沙土。
Satisfaction at last.
最終十分滿意。
They're collecting a particular kind of clay that contains vital minerals scarce in their natural diet.
它們在收集一種特殊的礦物質，而這種礦物質很難從自然食物中獲取。
It may be mud but there's just nothing quite like it for enriching the blood.
雖然有些牙磣，不過到了血液里也就沒什么了。
The clay also helps to absorb the toxins found in many leaves that the elephants eat.
粘土也可以吸收中和吃的葉子中的毒素。
There are other benefits to coming here.
到這里還有個好處。
These clearings are the only places where the forest elephants can get together in such numbers.
這塊空地是唯一可以聚集并展現象群數量的地方。
When they return to the forest, they will have to go their separate ways once more.
當它們返回樹林時，它們將再一次分開。
