a tropical forest的用法和样例：
- Army ants can turn a tropical forest into a battlefield.
- He also had a vision for a tropical forest institute to be part of the research activities of the university in Cairns.
- In the dense complex world of a tropical forest, it is more important to see well than to develop an acute sense of smell.
- a tropical forest with heavy annual rainfall.
- Is Singapore a tropical country?
- The traveller had to fight his way out through the tropical forest with an axe.