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.
周三,科学家们将喀拉喀和唐库班珀拉胡的警戒度由“正常”提高到“警告”,三级警戒的中等级,因为这两座近来定期喷出灰,并发出隆隆的声音。