a fleet of clouds的用法和样例：
- The company owns a fleet of car for its sale force to use.
- The hotel has a fleet of limousine to take guest to the airport.
- The company owns a fleet of cars.
- And he sailed with a fleet of 62 ships.
- He made his money with a fleet of moving vans.
- The company owns a fleet of cars for its sales force to use.