帮忙用英文翻译这篇文章！！！今晚就要！

in the past several hundreds of years， many collectors professed that they have the original in 1984. it has been verified eventually as the Davinci' original painting. the portrait has nothing different from the lady Mona Lisa but the smile. So the Experts conjectured that this Mona Lisa was another draft drew by Davinci.
There is another saying believed the which has been collected by the Louvre Museum is an imitation according to the theft happened in year 1911. in the case, has been stolen. after two years it apeared in Italy, but the two pillars behind Mona lisa have been cut away. after several years it was returned to the Louvre. Therefore Many expert considered that the returing was just a smork screen. the truth was the original has been sold to a wheathy collector for a big fund.

For hundrends of years,many collectors had claimed that they were in possession of the real "Mona Lisa".To our suprise,the number had reached 60.And what's more intersting,the Bertrand Art Gallery in Maine,America ,received a "unsmiling Mona Lisa" in 1984.After the determination , this painting was indeed Da Vinci's handwriting.The figure of the painting,expect the unsmiling expression,the other parts of her are much similar to Mona Lisa's.So experts speculated that the painting "unsmiling Mona Lisa "may be the contemporaneousness manuscript of the author .

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