Why did Robinson name the man Friday?

为什么罗宾逊给这个男人取名为星期五？

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He is the man Friday of teachers.

他是老师的得力助手。

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Tom is the boss's man Friday as well as his friend.

汤姆既是那个老板的朋友，又是他的得力助手。

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Tom is the boss's man Friday as well as his friend.

汤姆既是那个老板的朋友，又是他的得力助手。

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