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- main tunnel heading 主导洞
- Traffic from Cross Harbour Tunnel heading to Causeway Bay will be diverted to the second exit road at the left. 沿红磡海底隧道前往铜锣湾的车辆须改行左面第二条出口道路。
- The results are helpful for designing and construction of intersection of main tunnel and adit in major highway tunnel. 研究结论对长大公路隧道设计、施工横通道，有一定参考价值。
- Traffic from Cross Harbour Tunnel heading to North Point will be diverted to the first exit road at the left. 沿红磡海底隧道前往北角的车辆须改行左面第一条出口道路。
- The sectional cutting method is effectively applied to longhole raising but less applied to tunnel heading. 分段掏槽法已在深孔爆破掘进天井运用中取得一定效果，而在平巷掘进中运用却未予以足够的重视和研究。
- Center drift first construction method was adopted in Wushan main tunnel of Fuzhou 961 Civil Air Defence Work,and ground surface deformation was well controlled. 在福州961人防工程乌山主通道工程施工中采用中洞先行的施工方法，地功地控制了地表变形，保证了地表建筑物的正常使用。
- The Cross-Harbour Tunnel heading to Hong Kong Island and the Wan Chai-bound lane of the Aberdeen Tunnel were also sealed off. 红?海底隧道往港岛方向的管道及香港仔隧道往湾仔方向的管道都已封闭。
- In the first of the main tunnel on the tail of the Doubi, a group of great white stalactites and pegged to the wall, moving it to Siti, silver IMIS will be large, like a lifelike "White Horse. 足下景观扑溯迷离、目不暇接，大有时而如登九天，时而如临地府之感。在第一层主洞尾部的陡壁上，有一组雪白的巨大钟乳石贴壁而挂，它四蹄欲动，银综将耸，恰似一匹栩栩如生的"白马"。
- from inclined shaft to main tunnel 斜井转正洞
- conversion from horizontal adit driving to main tunnel driving 横通道转正洞
- The main impediment to growth is a lack of capital. 影响发展的主要障碍是缺乏资本。
- Middle-Deep Bore Blasting Experimental Study on Hard Rock Tunnel Heading 硬岩巷道掘进的中深孔爆破试验研究
- Crowds thronged the main square of the city. 城里的大广场上挤满了人群。
- intersection between main tunnel and sub - tunnels 主支洞交叉口
- Traffic from Cross Harbour Tunnel heading to Causeway Bay and North Point 红磡海底隧道往铜锣湾及北角交通安排
- The whole school (was) assembled in the main hall. 全校在大礼堂集合。
- The main feature on the program is her song. 那个节目的主要号召物是她的歌。
- Fables often have animals as the main characters. 寓言常以动物为主角。
- A heavy snowfall block the main road. 一次严重的降雪阻塞了主要公路。
- The gas main explode and set fire to the house. 煤气总管爆炸引起房子失火。
