It was showed in practice that the welding inclusions and blowholes were the main causes leading to the explosion of the tanks or the cracking of the welding seams.

实践表明，焊接夹杂和气孔是引起罐体焊缝裂纹或导致爆炸的主要原因。

youdao

If, as I mentioned on Friday, the latest EU council has failed to solve the eurozone debt crisis in a sustainable way, what could shock eurozone governments into effective evasive action - or, in a worst case, be the explosion that causes the disintegration of the eurozone?

BBC: Why banks are eurozone's fault line