The fire that engulfs the Witch's hands as she's trying to remove the ruby slippers is actually apple juice spewing out of the shoes - the film was then sped up to make it look more like fire.

女巫想要拿走红宝石鞋时，手上起的那团火其实是从鞋里泼出的苹果汁，电影用快镜头让它看起来很像火。

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Do you strap on the spark-generating ruby red slippers and click your heels three times, saying, "There's no test automation like object-oriented test automation"?

难道您捆上了能发出火花的红宝石拖鞋，并将您的鞋后跟点三下，说过“没有像面向对象的测试自动化这样的自动化测试”吗？

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Not true, says its opponent, who claims that King Louis XIV had red-heeled dancing shoes in the 18th century and Dorothy danced in ruby slippers in “The Wizard of the Oz”.

不过它的对手却表示并非如此。 伊夫圣罗兰宣称早在十八世纪法国国王路易十四就拥有一双红跟舞鞋，多萝西也曾在电影《绿野仙踪》里穿着一双深红色的拖鞋翩翩起舞。

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Only four pairs of the ruby slippers are known to exist.

BBC: Wizard of Oz ruby slippers set for UK display

Rhys Thomas, author of The Ruby Slippers of Oz, an expos?? of the Hollywood memorabilia industry, says Shaw's pair was of higher quality than the pair that now resides in the Smithsonian.

FORBES: Swept Up

Pieces of trivia are interspersed between the costumes: did you know that the ruby red slippers worn by Judy Garland in The Wizard of Oz were designed to contrast with the yellow brick road and show off the new wonders of Technicolor?

BBC: Hollywood comes to London��s V&A