herbicides造句
Resistance of weeds to certain
herbicides is beginning toshow up.
杂草对某些除草剂的抗药性已显现出来.
There is a lot of concern over the amount of
herbicides and pesticides used in farming.
人们对农业上灭草剂和杀虫剂的用量非常担忧.
Among the many regulatory substances in use we have controllable and selective
herbicides.
在所有的许多调节物质中,有控制性的和选择性的除草剂.
Arsenic is widely associated with the manufature of
herbicides and pesticides.
砷广泛地应用于除草剂和杀虫剂的制造中.