1.at least 至少
They reckon (that) their profits are down by at least 20%.
他们估计利润至少下降了20% 。
2.blow up 爆炸
These saboteurs threatened to blow up the factory if their demands were not met.
怠工者们威胁说,他们的要求如果得不到满足,他们就要炸掉工厂 。
3.catch fire 着火
There is a thick covering of leaves in the forest, which are very easy to catch fire.
森林中有厚厚的一层树叶,它们是非常容易着火的 。
4.take place 发生
Every day many traffic accidents take place.
每天都有许多交通事故发生 。
5.overwhelmed (强烈地影响而)使不知所措
I was overwhelmed by the sheer quantity of information available.
已有的信息量大得令我不知所措 。