Dr. Sydney immigrants

First of all, you have to take IELTS. If you are a graduate majoring in environmental engineering, it seems that you can apply for Australian immigration directly in China after taking IELTS, so you don't need to take a language test no matter which English-speaking country you study in.

In Australia, the best are the Australian National University, the University of Sydney and the University of New South Wales ... you can go to other study abroad websites.