line drive single平飞一垒安打

line of single curvature单曲率线

pure-line of single-oospore单卵孢株

line single-phase线路单相

On-Line Single专辑

forth line single-cell box girder四线多榀单箱单室箱梁

single line单行线;单行

single line drawing单线图;单斜图

Single line text单行文本

single line ahead单列前进;单纵队