即使在格陵兰恶劣的环境中，很多动物仍然能找到求生之路。

Even in Greenland's hostile conditions, many animals have found way to survive.

所有的求生之路粉丝都知道；去纤颤器！现代的除颤器可能与你在游戏中看到的不一样。

All my Left 4 Dead fans know that there is; the defibrillator! Modern-day defibrillators can vary quite a bit from what you see in video games.