expedition a (long)journey for a certain purpose：远征；探险队 expenditure spending or using up：消耗；支出 expert with special knowledge or training：特殊知识或训练的（人）；专门的；专家 ..
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英语分站 ... expedition a (long)journey for a certain purpose：远征；探险队 expenditure spending or using up：消耗；支出 expert with special knowledge or training：特殊知识或训练的（人）；专门的；专家 ...
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