事实上，pH值达0.5的伊真火山口湖是世界上酸性最高的湖泊。

They also render the Ijen crater-lake the world's largest highly acidic lake with a pH of 0.5.

youdao

游客蜂拥着去印尼爪哇岛是为了亲眼目睹壮观的卡瓦伊真火山——但他们从未想过能够在火山顶上看到这蓝绿交加的火山口湖。

Travellers flock to the Indonesian island of Java to see the magnificent Kawah Ijen volcano - but what they don't expect to find is the stunning turquoise-hued caldera lake at the volcano's summit.

youdao