I heard that a mass campaign encouraging show love to the victims of earthquake-stricken area is now widespread.

我听说为地震灾区的灾民献爱心的活动在广泛开展。

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Scientists have tried many ways to solve this problem and in China, a mass campaign has been started to help solve it.

科学家们已经采用许多方法来解决沙尘暴的问题，在中国，一场大规模的整治沙尘暴战役已经开始了。

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The ANC announced it was mounting a major campaign of mass political protests.

非国大宣布正在发动一场大型群众性政治抗议运动。

《柯林斯英汉双解大词典》

The Chinese authorities are now investigating the cases, and a mass vaccination campaign has been launched in the region.

BBC: Polio strain spreads to China from Pakistan

"You can't solve an environmental problem through a temporary mass campaign, " he said, adding that environmentalists need to address people's attitude first and foremost.

CNN: Fighting the desert one tree at a time

Eagerly awaiting large quantities of vaccine for a mass vaccination campaign, Foege and two CDC colleagues were then plunged into dealing with a sudden smallpox outbreak.

FORBES: Praise For The Gentle Giant Of A Doctor Who Influenced Bill Gates