open sesame
From the fairy tale Ali Baba and the Forty Thieves , in which the magic words
open sesame had to be said to open the cave where the thieves kept their
treasure.
源自童话故事《阿里巴巴和四十大盗》。只有念出咒语“芝麻，开门”，大盗藏宝洞的大门才能打开。
something that makes it very easy to achieve a particular thing
(达到…的)法宝，通行手段，开门咒语
A science degree can be an open sesame to a job in almost any field.
理科学位是可以在几乎所有领域获得一份工作的敲门砖。
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