These devices placed near mosquito breeding grounds have drastically reduced mosquito populations in certain areas.

把这个装置放在蚊子繁衍的地方将会在一些地方大量减少蚊子的数量。

youdao

The best measure is to minimise the breeding grounds of the Aedes mosquitoes by for example sealing up puddles of stagnant water, and avoiding mosquito bites.

预防措施的重点首是减少伊蚊繁殖的地方，包括清除积水防止蚊子滋生，以及避免被蚊子叮咬。

youdao

The government is distributing bed nets, draining mosquito breeding grounds and spraying huts with DDT to kill mosquitos.

NPR: Gates Foundation Backs Zambian Malaria Initiative

Dr. Barathan Sinniah, a parasite expert attached to a university in Perth, Australia, reckons the authorities must take more decisive action to clear mosquito breeding grounds.

CNN: ON DEADLY GROUND