Protective helmets for drivers and passengers of snowmobiles and bobsleighs .
摩托雪橇和滑雪长橇驾驶员和乘客用防护头盔。
It is understood they got into trouble when one of their snowmobiles broke down .
外界的理解是,他们因为其中一辆雪上摩托车故障而陷入困境。
A century on , snowmobiles are a faster option and , though they do break down occasionally , they usually need less maintenance than six dogs .
一个世纪以来,履带式雪上汽车是一种更加快的交通工具尽管它们偶尔发生故障,但通常比六只狗的维修要少。
A few may survive , or at least supplement their incomes , through traditional hunting ( these days more often with snowmobiles than with dogs ) but the economic outlook is clouded .