杀死植物的

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

有些人上喷撒毒剂以杀死花园内的昆虫。

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

能泌出一种杀菌素，可较短的时间内空气中对人体有害的病菌杀死。