东风从圣海伦山喷出旧火山灰, 产生危险尘埃, 但火山并没有爆发。 East winds stirred up old volcanic ash from Mount St. Helens, creating hazardous dust, but the volcano is not erupting.

强烈的东风从圣海伦山喷发了1980年代火山灰,在空气中产生可见的尘埃,但没有火山爆发。 Strong east winds have stirred up 1980s volcanic ash from Mount St. Helens, creating visible dust in the air, but there is no eruption. 美国地质调查局和其他机构确认火山并不活跃,其警戒水平没有改变。 The U.S. Geological Survey and other agencies confirm the volcano is not active, with no change to its alert level. 灰烬虽然不是最近的活动造成的,但对飞机和人类健康仍然有害。 The ash, though not from recent activity, remains hazardous to aircraft and human health. 干燥条件和风能导致旧灰矿床的恢复。 Dry conditions and wind are responsible for resuspending the old ash deposits.