Scientists on Wednesday raised the alert level for Anak Krakatoa and Tangkuban Prahu -- which regularly spew gas and rumble -- from "normal" to "warning," the middle of three alert levels.
上周三,科学喀拉喀托
唐库班珀拉胡
警戒度由“正常”提高到“警告”,三级警戒
中间等级,因为这两座
近来定期喷出
灰,并发出隆隆
声音。