VOA慢速英语:Pretty Flowers Lead Two Scientists to a Discovery

例句：She has a degree in biology.
      她具有生物学的学位。

2.pretty adj.漂亮的, 可爱的, 精致的

例句：They competed for a pretty girl.
      他们曾为一个漂亮女孩而竞争。

      What a pretty little house it is!
      多么小巧玲珑的房子啊！

3.crush vt.压破,征服,冲入,弄皱,挤入

4.weedy a.尽是杂草的,似杂草的,瘦弱的,蔓延的,丑陋的

5.contain v. 包含,包括,容纳;遏制,抑制,克制

例句：Plums, dates, and peaches all contain some kind of stone.
      李子、大枣和桃子都有种子。

6.modify v.修正,变更,修饰

例句：The two parties have both agreed to modify their contract.
      双方都同意修改合同。

7.sample n.样品,标本

例句：We are forwarding you our new samples.
      现寄上我们的新样品。