Current efforts in malaria control are mainly based on the use of insecticide sprays and treated bed nets.

VOA: special.2009.12.22

Nothing much can stop it. Americans still use the expression "to bulldoze" but mainly in political situations.

VOA: special.2009.02.15

It is also the first vaccine designed mainly for use in Africa.

VOA: special.2010.04.20

These are smaller, simpler machines designed mainly for Internet use.

VOA: special.2009.07.17

Most scientists believe the warming trend is mainly caused by human activity, especially the use of fossil fuels and the cutting down of forests.

VOA: standard.2009.12.09