previousadj.以前的;先于;在 ... 之前
previous annotation前人考订
previous employment先前职业
previous repair work大修工程
Previous arrangement前次安排
Previous Examinationn.剑桥大学文学士学位的初试
previous school year上学年
previous carry digit[计] 前位进位数位
previous irradiation前辐射
previous preparation前期准备
previous application早先申请