but desperate times require desperate measures. 但到了走投无路之时也会铤而走险
by exploiting the petrels' desperate need for bare rock. 它们知道利用海燕必定寻找裸岩筑巢的弱点
this is a desperate race against worsening weather. 这是一场与恶劣气候的死亡赛跑
and thousands of elephants have started to travel in desperate search for water. 数千头大象开始长途跋涉 不顾一切地寻找水源