engineering district;maintenance of way section;track division;track district;track maintenance division 工务段
jointless line;continuously welded rail track;jointless track 无缝线路
non-NTDS track {dummy track} 非开战术系统资料追瞄
replacing and laying track with track panel 轨排换铺
track to track fusion 航迹融合
track-to-track association 航迹关联
track-to-track fusion 航迹融合
track-to-track moving time 轨至轨移动时间
transforming single track into double track 单改双线
double - track existing single track line 增建二线
belly laugh 捧腹大笑
have the last laugh 笑在最后
Laugh 笑; 乐; 嘻; 笑柄; 开颜
laugh and grow fat 心宽体胖
laugh at 嘲笑; 悝; 嗤
laugh away 笑着消磨
laugh down 用笑声打断
laugh from ear to ear 咧着嘴笑
laugh in one’s beard 偷笑