VOA慢速英语:World Food Prize Honors Heads of Two Groups Based in US

step down退休, 辞职

例句：The manager had to step down on account of poor health.
      那位经理由于身体不好, 只能辞职不干。
 
2.People pass on their gifts of not just animals.

pass on传递; 传授

例句：Would you please pass the dictionary on to Mary?
      请你把这本词典传给玛丽, 行吗?

      The story is passed on from generation to generation in the village.
      这故事在村民中世代相传。

3. You just give them those resources and that training and opportunity, and you cannot hold them back.

hold back阻碍, 阻止

例句：He was so impatient that I could hardly hold him back.
      他是那样急躁, 我简直拉不住他。
 
      They built dykes and dam to hold back the rising flood waters.
      他们修筑了堤坝来阻挡上涨的洪水。

控制; 抑制

例句：She couldn't hold back her tears any longer and wept aloud.
      她再也忍不住了, 大声哭泣起来。

4.I think that would not have happened without the advocacy of hundreds of thousands of people and churches that are part of Bread for the World and that keep the pressure on their members of Congress.

without虚拟语气

一、用“without/but for/in the absence of ”表示“要不是”，“如果没有”（相当于if it were not for…）表示条件时，句中一般用虚拟语气。（也可用陈述语气） Without your help, I couldn' t finish my work on time. In the absence of water and air, nothing could live. 二、由“providing (that)/ provided (that)/on condition that/ in order that”引导的条件从句或目的从句，根据情况，可用虚拟语气。（有时也可用陈述语气） They are willing surrender provided they are given free passage. 三、用without / but for / in the absence of 表示"要不是"、"如果没有"，表示条件虚拟句： (1). Without air, nothing could live.要是没有空气，什么也不能生存。 (2). But for your assistance, we could not accomplish it.要不是你的帮忙，我们是难有成就的。 (3). In the absence of water and air, nothing could live.如果没有水和空气，什么也不能生存。