a web of railroads的用法和样例：
- They have set up a web of railroads.
- He was enmeshed in a web of deceit and lies.
- What Simpson told us was a web of lies.
- A web of palm branches formed the roof of the hut.
- He is enmeshed in a web of deceit and lie.
- He found himself snared in a web of intrigue.