a steady trickle of visitors的用法和样例：
- I've had a steady stream of visitors.
- The castle receives a steady stream of visitors.
- A steady stream of visitors came to see him in hospital.
- Only a trickle of water came from the faucet.
- The only site that draws a regular trickle of visitors is Ta Mok's concrete villa in the center of town, with its irrational maze of big, bare rooms and its underground bunker.