例句：That is a secure foothold.
      那是一可靠的落脚点。

      Foreign tourists feel happily secure while visiting the city.
      外国游客访问这个城市时都很有安全感。

2.devastating adj.毁灭性的

例句：It is the most devastating storm in 20 years.
      这是20年来破坏性最大的风暴。

3.transcontinental adj.横贯大陆的

4.indicator n.指示物;指示者

例句：Gold prices are often seen as an indicator of inflation.
      黃金价格常常被看作是通货膨胀的指标。

      It is still difficult to develop indicators for many concepts used in social science.
      为社会科学领域的许多概念确立一个指标仍然很难。

5.suspect v.怀疑…有罪

例句：The police suspect him of having taken the money.
      警察怀疑钱是他偷的。

      They suspect him to be a thief.
      他们怀疑他是个贼。
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