The first came last month. The next is in November. Such a rare triple-threat occurs only once every 11 years.
第1个出现在上个月，下一个出现在11月。这种罕见的三重“不幸”每11年才出现一次。
2
Central America gets hit by a triplethreat of natural disasters: earthquakes, hurricanes and mudslides.
中美洲受到地震、飓风和泥石流等自然灾害的三重威胁。
3
But there has been nothing like the triplethreat in Japan wrought by last week's earthquake and tidal wave, combined with growing worries of a nuclear reactor meltdown.