With first light, the crocodiles lose the element of surprise,
但天一亮 鳄鱼就无法偷袭了
and the battle is over, for now.
战斗暂时结束了
The mother fish has survived, but where are her young?
母鱼逃过了一劫 但她的孩子们在哪里
All present and correct.
全都安然无恙
They spent the whole night sheltering in her mouth.
他们在妈妈的嘴里平安地度过了一夜
The contest will be repeated at sunset.
然而这场战役在日落时又将打响
There is nowhere else to go.
他们无处可逃
Oases are always sought by desert travellers,
绿洲往往是沙漠旅客们的索求之地
but not all are as they seem.
但并不是所有绿洲都是安全的
This is the great Ubari Sand Sea,
眼前是壮观的奥巴里沙海
in the heart of the Sahara.
位于撒哈拉沙漠的中心
These swallows have travelled 1,500 miles
这些家燕自离开尼日利亚后
since they left Nigeria.
已飞行了1500英里
Their superb powers of navigation
他们杰出的导航定向能力
will eventually guide them to Europe,
将引领它们飞向欧洲
but now they, and other thirsty migrants,
但现在 它们和其他饥渴的候鸟
need to find a speck of blue amidst this ocean of sand.
急需在这片沙海中找到一处水源
And here it is.
就是这里