The term Special Mission Unit or Special Missions Unit (SMU), is used to describe some eliteBennet (2001), p. 189.
"To counter terrorism, and I'm talking about terrorism writ large,extremism, requires more than just your special mission unit forces.
VOA : standard.2009.09.23
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。