The coast guard is a part of a country's military forces and is responsible for protecting the coast, carrying out rescues, and doing police work along the coast. 海岸警卫队
noun [专属名词]海岸警卫队;海岸警卫队队员
The U.S. Coast Guard says it rescued more than 100 Haitian refugees. 美国海岸警卫队称他们营救了一百多名海地难民。