For fun, children sometimes put up a stand outside their homes and sell this drink to passer-bees on the street.

孩子们为了好玩有时会在家门口摆个摊子来向路人出售柠檬水。

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Sitting in the seventh row, Belgian collector Mark Vanmoerkerke said the auction house seemed to have taken the interruption in stride: "It's fun to see people stand up for what they believe in, " he said.

WSJ: Sotheby's Sale Defies Demonstrators