经济学人下载:北极探险(2)

1.illusion 错觉
But this premise turns out to be an illusion.
但是这一假设原来只是一种错觉。
2.accelerate 加快
Catalysts are something used to accelerate chemical action.
催化剂用来加快化学反应。
3.tricky 棘手的
Shifting winds have made the operation trickier on already difficult terrain.
变化的风向再加上复杂的地形，使得灭火工作更加棘手。
4.overestimate 评价过高
In fact, we frequently overestimate our own abilities.
事实上，我们经常高估自己的能力。