firstadj.第一的;最初的adv.首先;第一n.最初;(序数词)第一
first-in first-out process先入先出方法
first arrivals on seismic data初至波
first-order Raman scattering一阶拉曼散射
first language transfer in SLA母语迁移
first order feed-back system一级反馈系统
first normal stress difference第一正应力差
First generation cephalosporin第一代头孢菌素
First diagonal coronary artery第一斜行冠状动脉
first language under bootstrap引导程序下的第一语言
"God is the first cause"