Its population is around 105,000 and most of them live on the main island of Tongatapu.

它的人口约为10.5万，其中大多数人生活在塔普岛。

Then, he said he drifted or swam another eight hours to a second island with no one living on it before finally swimming again to the main island of Tongatapu.

然后，他说他又游了8个小时，到了又一个无人居住的岛上，最后又游到了汤加塔普的主岛。

On December 20 last year and then on January 13, the volcano erupted again, creating visible ash clouds that could be seen from the Tonga island Tongatapu.

去年 12 月 20 日和 1 月 13 日， 火山再次喷发，形成可见的火山灰云， 从汤加岛 Tongatapu 可以看到。