"Trust is a fragile thing, once earned, it affords us tremendous freedom; but once trust is lost, it can be impossible to recover. Of course the truth is, we never know who we can trust. Those we are closest to can betray us. And total strangers can come to our rescue. In the end, most people decide to trust only themselves. It really is the simplest way to keep from getting burned. " 
信任是很微妙的东西，一旦得到我们会感到无比自由；但是一旦失去就几乎不可能再挽回。当然，我们永远不知道可以相信谁。最亲近的人也有可能背叛我们，而未曾谋面的人也可能伸出援助之手。所以，大多数人决足只相信自己。这是避免引火上身最简单的方法。

1. fragile ['frædʒəl] 
脆的，易碎的

2. vulnerable ['vʌln(ə)rəb(ə)l] 
adj. 易受攻击的；易受伤害的
vulnerable groups 弱势群体

3. afford [ə'fɔːd] 
vt. 给予，提供；买得起
How can he afford to buy a new car? 他怎么买得起一辆新车？
affordable adj. 负担得起的 
affordable housing 经适房

4. tremendous [trɪ'mendəs] 
adj. 极大的，巨大的；惊人的

5. recover  [rɪ'kʌvə] 
vt./ vi.恢复；弥补；重新获得

6. betray [bɪ'treɪ] 
vt. 背叛；出卖 
betrayal [bɪ'treɪəl] n.

7. rescue ['reskjuː] 
vt. 营救；援救
n. 营救；援救；解救