例句與造句

1. San Francisco's BART operates large cars on its well-engineered routes.
2. The LL & DR was to be designed by Thomas Bouch on his " cheap railway " principle, and he explained to potential shareholders that the ten mile line would cost no more than one mile of conventionally engineered route.
3. It's difficult to find engineered routes in a sentence. 用engineered routes造句挺難的