VOA慢速英语:In Kenya, Low-Cost Crop Insurance for Small Farmers

yet用作连词时，与but一样也主要用于转折，意为“但是”“而”：

I have failed, yet I shall try again. 我失败了，但我还要尝试。

The judge was stern, yet completely fair. 法官很严峻，却完全公正。

They are the same, yet not the same. 它们又一样，又不一样。

It is strange, yet it is true. 那真是怪事，然而却是事实。

I’ve been away only for three years, yet I can hardly recognize my hometown. 我仅在外三年，可我几乎认不出我自己的故乡了。

He said he was our friend, yet he wouldn’t help us. 他说他是我们的朋友，但却不肯帮助我们。

有时用在句首。如：

Yet the house was cheerful. 但屋子里显得很欢快。

Yet its population has doubled. 但它的人口翻了一番。

yet有时可与并列连词and或but连用，构成习语and yet和but yet，且两者大致同义(均相当于表转折的but)：

I gave him ten pounds (and) yet he was not satisfied. 我给了他十镑但他仍不满足。

She’s vain and foolish, and yet people like her. 她很虚荣愚蠢，但人们却喜欢她。

2.Farmers register at businesses taking part in the program and receive a policy number through their mobile phone.

take part in参加…, 参与…活动

例句：John takes part in many school activities.
       约翰参加很多学校里的活动。

      Joe took an active part in the struggle.
      乔积极参加斗争。

take part in, join和join in 都有“参加”的意思，可是它们之间还有很大的区别：

    take part in

    take part in 意为“参加，参与（某事物或某活动，如movement, revolution, meeting, conference, conversation, war等）”。例如：

   Switzerland didn't take part in this war. 瑞士没有参加这次战争。

    join

    join意为“参加（某组织），加入（某处任职），参加到某个人群中去，从而成为其中一员”。例如：

    She joined a health club. 她参加了一个健身俱乐部。

    join in

    join in sth. / doing sth.意为“参加”，后面接的宾语一般是表示竞赛、娱乐、游戏等活动的名词或V-ing。例如：

    Can I join in the game? 我可以参加这个游戏吗？

3.About two hundred farmers signed up for the insurance within the first two weeks that it was being offered there.

sign up跟…签订合同

例句：They manage to sign up all the best performers.
       他们设法跟所有最佳演员签订合同。

4.When a farmer elects to join the insurance, we sell the product on wholesale so that the premium is reduced, so that he doesn't feel it, so that it cushions him and I've also sold the product.

so that引导结果状语从句

He worried so that he couldn’t sleep.他急得睡不着。(so that引导结果状语从句) // It was very cold, so that the river froze.天气寒冷， 河水都结冰了。(so that引导结果状语从句) // I came to the class early so that I could see the classmate beside me.我赶早来上课， 以便早点看到我旁边的同学。(so that引导目的状语从句)