VOA慢速英语:To Fight Malaria, Bed Nets Are the Most Important Weapon

insecticide – n. a chemical substance that is used to kill insects

net – n. a device that is used for catching or holding things or for keeping things out of a space and that is made of pieces of string, rope, wire, etc., woven together with spaces in between; a net that is placed over something (such as a bed) in order to keep out mosquitoes

absorb – v. to take in (something, such as a liquid) in a natural or gradual way

lethal – adj. causing or able to cause death

apply – v. to put or spread (something) on a surface, a part of the body, etc.