陆海空三军中的高级军士。
A senior noncommissioned officer in the army or air force or marines .
他表示,对于军官和高级军士而言,在桑德赫斯特学院受过训练能够推进他们事业的发展。
For the officers and senior NCOs involved , a spell at Sandhurst is a career-enhancing move , he says .