求翻译：To find out whether bees can see colours ,the following experment is made.A table is put in a garden,and on the table is a blue card with some sugar on it.As soon as one bee finds the sugar, many more come to it one after another in a short time.It seems that one bee is able to tell the news of food to the other bees in their "home".After a moment,the blue card with sugar on it is taken away.是什么意思？

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