这是一个罕见的事件在华盛顿。
尾事件罕见但他们仍然具有重要经济意义的。
Tail events are rare but they are nevertheless economically important.
最近北海发生了罕见的漏油事件,而没有明显的原因。
Recently there was a rare oil leak in the North Sea, for no ostensible reason.
最近北海发生了罕见的漏油事件,而没有明显的原因。
Recently there was a rare oil leak in the North Sea, for no ostensible reason.
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