英语听力：自然百科 圣河之旅 The Nile尼罗河—15

 -Give us a sense of the scale of your farm here, be the center ** that we see there. You said that's 440 meters long I think, so nearly half kilometer long. So each of these circles is about a kilometer wide.-So this is equivalent¹ to 120 football pitch.

-And how many these crop circles almost you got?

-We have 102 here. -I get this.

-I have 10,000 football to care about.

In this field, Ali is growing al*, a crop used to feed animals. Most is exported to Sudan, its Islamic neighbour in the Gulf² states, where their remaining water supply is disappearing fast. Ali also uses the crop for the farm's own herd³ of milking cows, who shelter from the searing s* sun in giant purpose-built shades.

-You've got what look like dozens of Britain cows?

-Year.

-We could be in Lincolnshire or D* in the UK! There are two and half thousand dairy cows here, cared for by Dr. Muhammad.

-Dr. Muhammad!

-Oh, hello!

He uses the latest technology to keep these European breed at home in Africa.

1 equivalent   

adj.（to）相等的，等价的；n.相等物，等值物

参考例句：

• Nodding your head is equivalent to saying "yes".点头就等于说“赞同”。
• You will receive the full equivalent of your money.你将收到与你的款项价值完全同等的物品。

2 gulf   

n.海湾；深渊，鸿沟；分歧，隔阂

参考例句：

• The gulf between the two leaders cannot be bridged.两位领导人之间的鸿沟难以跨越。
• There is a gulf between the two cities.这两座城市间有个海湾。

3 herd   

n.兽群，牧群；vt.使集中，把…赶在一起

参考例句：

• She drove the herd of cattle through the wilderness.她赶着牛群穿过荒野。
• He had no opinions of his own but simply follow the herd.他从无主见，只是人云亦云。