胆战心惊

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形容害怕到了极点，例老虎未出现之时，他们均自称是打虎英雄，但待远处传来一声虎啸，这些大英雄却个个胆战心惊，吓得拔腿就跑。

Before the tiger appeared，they all boasted of being heroes at tiger hunting．When the tiger’s roar was heard from afar，however，they became terrorstricken and decided to run away as quickly as possible．