例句與造句

1. In 1848 Brown developed and patented the conical spring rails to the rapidly expanding railway industry.
2. Silver Spring is serviced by the Brunswick Line of the MARC Train, Silver Spring Rail Station is the busiest in the entire Washington Metro Area, and provides connections between several transit services, including those mentioned above.
3. It's difficult to find spring rails in a sentence. 用spring rails造句挺難的