how to prevent volcano eruption?

火山爆發是天自現象，就像地震一樣，我們人類不可以防止地震和火山爆發。

我們只可以在這樣的情況下把傷亡人數和財物損失減低而已。

I think that it is a natural phenomemum and human beings cannot stop it, but i think that if some countries can stop the nuclear bombs testing and it could help. You see that a lot of nuclear bombs are explored inside the earth and it will trigger the earthquate probably.

Very simple.... to stop gravity from working. Gravity squeezes lava of the earth and that's why the earth must release some pressure by volcano eruption.