The last cow to graze on the White House lawn.

它是最后一头在白宫草坪上吃草的牛。

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

不在一块草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草。

A herd of cattle was quietly grazing on the grass.

一群牛在草地上正安静地吃草。

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的草了。

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

它们在草床上吃草，最容易受到的攻击。

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

通过采食这些中草药羊的抗病能力大为提高。

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

哈萨天山启程带著家畜到达准格尔盆地贫瘠的土地上放牧。

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

以西班牙和葡萄牙的黑脚猪为例，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，有些吃掉海草，为新珊瑚腾出空间。其它控制着整个食物链。

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

它们就在那块小草地上吃草，渡过了五千五百年的漫长岁月。

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

我的牛羊家畜，像尼普顿的老牧的一样，无忧无虑地在那广阔的海底牧场上吃草。

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，享受着肥美的嫩草。

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家族，他们整个夏天在茂密的高山草甸放牧家畜。

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

如图所示，在苏格兰奥尼群岛的北罗纳德赛岛上，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.

他们减少了受保护的马群的数量，却没有控制依赖于同一片土地的牛羊的数量。

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的多个小块草地上吃草。

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

农场的动物被送去吃本已有限的植被，而采矿使本已贫瘠的土壤变得更加贫瘠。

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的食物所以海鬣蜥以海底的植物为食。

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草的家畜数量比野马的数量要多很多。