The major polluting agents are animal wastes, antibiotics and hormones, chemicals from tanneries, fertilizers and the pesticides used to spray feed crops.
主要的污染物是动物粪便、抗生素和激素、制革厂的化学品、用于饲料作物的化肥和杀虫剂。
2
At present, students have to feed it chemicals to keep going but he hopes it will be both evolving and self-sustaining within a couple of years -a primitive form of synthetic life.
At present, students have to feed it chemicals to keep going but he hopes it will be both evolving and self-sustaining within a couple of years - a primitive form of synthetic life.