CNN news 2010-10-24 加文本

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例句：The tree grew on the brink of the cliff.
      那棵树生长在峭壁的边缘。

(危险的)边沿

例句：The company is on the brink of bankruptcy.
      该公司已濒临于破产的边缘。

2.sustainable a.足可支撑的,养得起的,可以忍受的,可持续的

3.burden vt.装货于,麻烦,使负担

例句：The economy was further burdened by a flood of refugees.
      难民大批涌来使经济负担愈加沉重。

4.enforce vt.实施, 执行

例句：The police enforce the law.
      警察执法。

5.comply vi.遵从, 依从, 服从

例句：She was told to pay the fine, but refused to comply.
      她被通知交纳罚款, 但她拒不服从。

6.pend vi.悬而未决

例句：The lawsuit was then pending.
       那件讼案因而尚未解决。