The last cow to graze on the White House lawn.

它是最后一头在白宫坪上吃牛。

Not grazing so many animals on a given patch of land would discourage transmission.

不在一块地上过量放牧动物会减轻虫害传播。

We saw a flock of sheep grazing on the hillside.

我们看见一群羊在山丘上吃。

A herd of cattle was quietly grazing on the grass.

一群牛在地上正安静地吃。

Soon they would graze on the grass prepared by the zebras.

一会它们就要吃斑马为它们准备。

By grazing on these herbs, the sheep develop a stronger resistance to diseases.

通过采食这些中药羊抗病能力大为提高。

Grazing on the grass beds, they're the most vulnerable to shark attack.

它们在床上吃，最容易受到鲨鱼攻击。

The Kazakhs have arrived from the Tianshan Mountains to graze their animals on the meager pickings in the Zhunge'er.

哈萨克人从天山启家畜到达准格尔盆地贫瘠土地上放牧。

Take the pata negra pigs in Spain and Portugal that spend their lives grazing on acorns.

以西班牙和葡萄牙黑脚猪为例，它们一生都在吃橡子。

He says some fish graze on seaweed, clearing space for new corals. Others control whole food chains.

他表示，有些鱼吃掉海，为新珊瑚腾出空间。其它鱼控制着整个食物链。

And indeed they've been grazing on their little patch of grass for about five and a half thousand years.

它们就在那块小地上吃，渡过五千五百年漫长岁月。

Like the flocks of old Proteus, King Neptune's shepherd, my herds graze without fear on the ocean's immense prairies.

我牛羊家畜，像尼普顿老牧人一样，无忧无虑地在那广阔海底牧场上吃。

In the dry season, herds as large as 400 gather around the Minneriya reservoir to graze on its fertile grasses.

在旱季，400多头大象聚集在米内日亚水库周围，享受着肥美嫩。

In the upland valleys a family of Kazakhs has been grazing their livestock all summer on the lush alpine meadows.

在这高地山谷有个哈萨克家族，他们整个夏天在茂密高山甸放牧家畜。

And, as the picture shows, sheep on North Ronaldsay, in the Orkney Islands of Scotland, still graze on the stuff.

如图所示，在苏格兰奥克尼群岛北罗纳德赛岛上，羊仍然以这种东西为食。

They removed the protected horses, but did not limit the number of cattle and sheep grazing on the same land.

他们减少受保护马群数量，却没有控制依赖于同一片土地牛羊数量。

All day he watched over them while they grazed on the little plots of grass among the rocks and cliffs.

他每天照看着它们在岩石和峭壁间多个小块地上吃。

Farm animals are sent out to graze on the already-limited vegetation, and mining has made the already-poor soil even poorer.

农场动物被送去吃本已有限植被，而采矿使本已贫瘠土壤变得更加贫瘠。

They are vegetarians, but since there's little food for them on the land, marine iguanas graze on the sea floor.

它们是素食者但由于岛上没有能吃食物所以海鬣蜥以海底植物为食。

But Messmer said the number of livestock that grazed on public land is far larger than the number of wild horses.

但是梅斯默说在公共土地吃家畜数量比野马数量要多很多。