Zhè tiáo lù yīzhí yánshēn dào shāndǐng.
This road extends all the way to the mountaintop.
Tǎolùn cóng kètáng yánshēn dào le kèwài.
The discussion extended from the classroom to outside class.
Tiělù wǎng bùduàn xiàng xī yánshēn.
The railway network keeps extending westward.