问题: What do you think are the cheapest and most expensive means of transport?
Walking is free and accessible to almost everyone.
It's environmentally friendly and also good for health.
No need for fuel or tickets.
Bicycles are relatively inexpensive to buy and maintain.
Cycling is faster than walking and still very affordable.
Many cities now have bike-sharing systems which are cheap to use.
思路 3
Most Expensive: Private Jets
Owning or chartering a private jet is extremely costly.
High costs for maintenance, fuel, and crew.
Used mostly by the wealthy for convenience and luxury.
Yachts are not only expensive to buy but also to maintain.
Used for leisure and often signify high social status.
Costs include crew, maintenance, docking fees, and fuel.
问题: What do you think are the cheapest and most expensive means of transport?
Cost an arm and a leg: To be very expensive.
On a shoestring: With a very limited amount of money.
Break the bank: To be very expensive or costly.