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,科学家们将喀拉喀托火山和唐库班珀拉胡火山度由“正常”提高到“
告”,三
中间等
,因为这两座火山近来定期喷
火山灰,并
声音。