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
和唐库班珀拉胡的警戒度由“
”
高到“警告”，三
警戒的中间等，因为这两座近来定期喷
灰，并发隆隆的声音。
。
