| 1 | The great railway lines of England all start from London. | |
| 2 | Our spinal cord is not merely a trunk line transmitting phone calls from the brain. | |
| 3 | The regional and international combo network is integrated with domestic trunk and feeder lines. | |
| 4 | Flocks of sheep could be seen wandering down the side of the area's road artery, the very busy Jing Shun Lu. | |
| 5 | The train moved slowly south through flat, drab mainline scenery. |