snowmobiling       
noun [ U ] /ˈsnəʊ.məˌbiː.lɪŋ/ /ˈsnoʊ.məˌbiː.lɪŋ/
 摩托雪橇(活动)
the activity of driving a snowmobile (= a small motor vehicle for travelling on snow and ice)
  Snowmobiling has evolved from a fun recreational activity to a big business. 摩托雪橇已经从一项有趣的休闲活动发展成为一项大生意。 
 There are plenty of trails where you can go snowmobiling.
 Winter sports such as snowmobiling are big in forest areas in the north.
 - More examples
 - A small area remains open for snowmobiling.
 - They want snowmobiling eliminated or at least reduced in the park.
 - There are places where snowmobiling and hunting would be OK.
 - Snowmobiling is strictly prohibited inside the boundaries of Lassen Volcanic National Park.
 - There are inherent dangers in snowmobling, as with any other sport, but the vast number of people ride safely and responsibly.