• 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

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