leave behind cause to remain behind; forget to take or bring along; abandon in a retreat 留下;忘带

She left her bag behind in the train. 她把提包丢在列车上了。

ox n. (pl. oxen) bull used for farm work公牛;耕牛

He is as strong as an ox. 他像牛一样强壮。

Kansas n. 堪萨斯州(美国洲名)

frontier n.[c] the border, the line between two countries国境;边境

We must show our passports at the frontier. 在边境我们必须出示护照。

lose one's way become lost 迷路;迷失

Lily lost her way in the woods. 莉莉在森林里迷了路。

barren adj. lacking vegetation, especially useful vegetation 不毛的;贫瘠的

The desert is barren land. 沙漠是贫瘠的土地。

salty adj. tasting of salt; containing salt 盐的;咸的;含盐的

Sea water is salty. 海水是咸的。

pond n. a body of still water smaller than a lake池塘

There is a flock of waterfowls on the pond. 池塘上有一群水鸟。

patch n. small piece of ground 小块地

They grow their own vegetables on a small patch of ground. 他们在一小块土地上自种蔬菜。

n. pieces of cloth that you put over a hole in clothing, sheets, etc. 补钉

I sewed a patch over the hole in my jeans. 我给我工装裤上的洞打了个补钉。

burden n. something that you carry; a heavy load 负担;包袱

It is a burden to the people. 这对人民是一种负担。

n. a duty which is hard to do well 责任

The burden fell on me. 责任落在我身上。

desperate adj. having no hope and ready to do any wild or dangerous thing 绝望的;不顾一切的

The prisoners became desperate in their attempts to escape. 那些囚犯拼命企图逃亡。

adj. very serious 极严重的;危急的

The country is in a desperate state and we must work hard.