1N-COUNT 生态学家 An ecologist is a person who studies ecology. 生态学家
Ecologists argue that the benefits of treating sewage with disinfectants are doubtful.
生态学家认为用消毒剂处理污水是否有益值得怀疑。
2N-COUNT 环境保护主义者；生态保护论者 An ecologist is a person who believes that the environment and natural resources should be preserved and used in a sensible way, rather than being wasted. 环境保护主义者；生态保护论者
In the opinion polls the ecologists reached 20 per cent.