They lack basic training and experience and thus often get lost or hurt in bleak and isolated areas, giving the mountain rescue teams a hard time.

bleak 是形容词，意思是"荒凉的、萧瑟的"，常用来形容缺乏生机、人迹罕至的自然环境。这个词带有一种寒冷、空旷、令人不适的感觉，特别适合描述高海拔山区或极地等严酷的自然环境。