Today all of us have come to realize that environmental studies involves many different fields. It is encountered in agriculture and engineering alike. And what normally brings us into contact with the environment is a variety of practical needs.
今天大家已漸漸瞭解生態學橫跨很多領域，在農業、工程各方面也都有機會接觸，但通常都因為實用需要而來接觸生態。