A tsunami is a series of waves usually caused by an underwater event like an earthquake or a volcanic eruption and they can cause serious damage to communities that are hit by them.

海啸通常是由地震或火山爆发等水下事件引起的一系列波浪，它们会对遭受海啸袭击的社区造成严重破坏。

Tsunami warnings were issued across the Pacific and the next afternoon, a series of waves hit the island country of Tonga, some as high as 15 meters, killing three people and leaving mass destruction in their wake.

整个太平洋地区发布了海啸警报，次日下午，一系列海浪袭击了岛国汤加，部分海浪高达15米，导致3人死亡，并造成大规模破坏。