杀死植物的

Some people exterminate garden insects by spraying poison on the plants.

有些人在植物上喷撒毒剂以杀死花园内昆虫。

Can secrete alexin of a kind of plant, can be inside shorter time kill the harmful to human body bacteria in air.

能分泌出一种植物杀菌素，可在较短内空人体有害病菌杀死。