为何学士和光棍在英文里是同一个词?

The term baccalaureus is a pun combining the prosaic baccalarius with bacca lauri "laurel berry" — according to the American Heritage Dictionary, "bacca" is the Old Irish word for "farmer" + laureus, "laurel berry," the idea being that a "baccalaureate" had farmed (cultivated) his mind

因为学士很多都是打光棍。所以学士=光棍，
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