adj.一级的,一阶的
She got a first in maths at Exeter. 她在埃克塞特大学数学系毕业,获一级荣誉学位。
Eric McLean is chargedwith first degree murder in last year deadlyshooting. 麦克里恩被指控在去年的重要的枪杀案中犯有一级谋杀罪。