Meanings of double violence in English

Personally, I wanted to probe deeper into how Japanese society could perpetrate such a double violence.

We must haste, for the bell is tolling with double violence to give warning that the waters are near.

His thirst, in consequence of the burning heat of the sun, reflected with double violence on the sand, became intense.

The sickness cut short these plans, but it only inflamed to double violence the excitement and the agitations which attended them.

Her sufferings, however, returned with double violence; she endured the most excruciating pains; and was again considered to be at the point of death.