他的骄傲自大最终导致了他的垮台。

His arrogance ultimately caused his ___downfall.

缺乏沟通往往是团队合作的致命弱点。

Poor communication is often the ___downfall of teamwork.

突如其来的大雪导致交通瘫痪。

The sudden ___downfall of snow paralyzed the traffic.