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
和唐库班珀拉胡火
戒度由“正常”提高到“告”，三级戒中
等级，因为这两座火近来定期喷出火
，
发出隆隆声音。
观点；若发现问题，欢迎向我们指正。
