她一时心血来潮，在拍卖会上出价五千美元竞拍一件抽象雕塑，而她此前从未收藏过艺术品。
On a caprice, she bid five thousand dollars for the abstract sculpture at the auction, though she had never collected art before.
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解释
心血来潮的冲动决定，非理性、缺乏计划
On a caprice, she bid five thousand dollars for the abstract sculpture at the auction, though she had never collected art before.
心血来潮的冲动决定，非理性、缺乏计划