Like much of the world, I watched and rewatched the videos of the catastrophic flood that have been filtering out of Nepal since Wednesday with horror and sadness. 像世界上许多人一样，自上周三以来，我带着恐惧和悲伤，一遍又一遍地观看从尼泊尔传出的那场灾难性洪水的视频。 But unlike many, I have an intimate knowledge…