英语翻译Stephen Martinez is an environmental engineer.He works i

英语翻译
Stephen Martinez is an environmental engineer.He works in many places,both inside and outside.He works for companies and for the government.Today he is looking for dangerous gas and other toxic substances.Sometimes they have no taste or smell,but they can poison people,animals,or plants.He is testing the dirt,air,and water near a large factory.He is digging a hole.He is using special tools to collect samples.
Many countries need environmental engineers.In the modern world,more governments are paying for a cleaner environment.They do not want factories to pollute the earth,air or water.They also want factories to store toxic substances in a safe way.Now Stephen Martinez is covering the holes and finishing the tests.He is studying his mixtures and laying down his tools.He is finished for the day.Now he can relax.Today is good day for the company.Stephen Martinez did not find any toxic substances.Unlike another factory yesterday,this factory is clean.