| 1. | They ran for the culvert and ducked in .
他们跑到涵洞跟前，钻了过去。 |
| 2. | After days of hard work , the culvert was at last completed .
经过几天的苦战，总算把涵洞修好了。 |
| 3. | Fundamental code for design on railway bridge and culvert
铁路桥涵设计基本规范 |
| 4. | Standard specification for corrugated aluminum box culverts
波纹铝箱形涵洞标准规范 |
| 5. | General code for design of highway bridges and culverts
公路桥涵设计通用规范 |
| 6. | Construction of box culvert no . 1 extension in progress
箱形排水渠的伸延工程 |
| 7. | Developmeant on cad system for railway culvert
电力数据备份系统的建设与研究 |
| 8. | Standard specification for corrugated steel box culverts
波纹钢箱涵标准规范 |
| 9. | Modification of existing bridges , subways and box culverts
修建现有的桥梁，隧道与暗渠 |
| 10. | Supervision and maintainance of the highway bridge and culvert
谈公路工程桥涵管理与养护 |
