lever

她用一根长杠杆撬起了那块沉重的石头。

She used a long ___lever to lift the heavy rock.

媒体曝光成为公众对抗大公司不法行为的有效手段。

Media exposure has become a powerful ___lever for the public to fight against corporate misconduct.

工人用杠杆将沉重的石板撬了起来。

The workers used a ___lever to lift the heavy stone slab.