Families are rushing to Nepal to search for the 33 British nationals who are still missing, as fears mount over the risk of a second wave of flooding in the region.(亲属们正赶往尼泊尔寻找失踪的33名英国公民，同时对该地区第二波洪水的担忧加剧。)
亲属们正赶往尼泊尔，寻找仍失踪的33名英国公民，同时对该地区发生第二波洪水的担忧日益加剧。
The catastrophic flash floods that hit Nepal and Tibet on Wednesday, thundering down valleys and sweeping away entire villages, have killed at least 538 people, while more than 1,500 remain missing.(周三袭击尼泊尔和西藏的灾难性山洪，轰鸣着冲下河谷，卷走整个村庄，已造成至少538人死亡，另有1500多人失踪。)
周三袭击尼泊尔和西藏的灾难性山洪，轰鸣着冲下河谷，卷走整个村庄，已造成至少538人死亡，另有1500多人失踪。
Among them are hundreds of foreign tourists who were visiting the mountainous region, which is popular with(受……欢迎) trekkers(徒步旅行者) and pilgrims(朝圣者) for its natural beauty and religious significance.
其中数百名外国游客当时正在该山区游览，这里因自然美景和宗教意义而深受徒步旅行者和朝圣者的欢迎。