I believe that music can act as a magnet to draw people together.

我相信音乐可以像一块磁铁那样将人们吸聚在一起。

youdao

The Indian mustard plant (Brassicaceae5) is believed to act as a magnet for essential minerals and metals in the soil, which we don't get enough of in our food today.

人们认为印度种植的芥菜（芸苔）像磁铁一样可以吸收土壤里的一些主要矿物质和金属元素。而我们每天的食物中却缺乏足够的此类矿物质和金属元素…

youdao

The league's promoters hope it will act as a magnet for high-school players, as well as introducing rugby to more students.

ECONOMIST: More and more Americans are being converted to the sport

The town hall is reluctant to provide more permanent shelter in case, like Sangatte, it should act as a magnet and swell the migrant numbers further.

BBC: News, Calais

Which raises the question, if the basics aren't there, why on earth do these giant cities continue to act as a magnet for such vast numbers of people?

BBC: Megacities face delicate balancing act