評(píng)論
打印
The elephants have found some of their favourite food.
大象找到了一些它們最喜歡吃的食物
Grasses are the staple diet of all elephants,
草是所有大象的主食
but this herd concentrates on digging up the roots,
但這群象卻忙著挖掘草根
which have more nutrition and moisture than the stems.
因?yàn)椴莞械臓I(yíng)養(yǎng)和水分比莖干多得多
It's the sort of behaviour that can make all the difference in a place of serious shortages.
這一舉措在這個(gè)資源嚴(yán)重匱乏的地方顯得極為重要
Yet all this can change in an instant.
然而所有這一切即刻就將發(fā)生改變
The fortunes of many deserts are ruled by distant rains.
許多沙漠的命運(yùn)都由遠(yuǎn)方的雨水決定
This water fell as rain in mountains more than 1 00 miles away.
這些水來(lái)自100英里之外的山地降雨
It's known as a flash flood and called that because the water may run for just a single day.
它叫做“瞬時(shí)洪水”，之所以這么叫是因?yàn)檫@些水可能僅僅流淌一天左右。
It's an event that only happens once or twice a year at the most.
而且一年最多也只發(fā)生1至2次
The sandy riverbed acts like a giant strip of blotting paper, sucking up the water as soon as it appears.
布滿(mǎn)沙子的河床像是一張巨大的吸水紙，水一邊流淌一邊被它吸去。
But every square metre of soil moistened by this river will increase the chances of survival for those that live here.
這里的每一寸土壤都已被河水潤(rùn)濕，為生活在這里的動(dòng)物們帶來(lái)了生機(jī)。
