twenty (20)
= veinte (20)
Ex: Twenty years ago, I was moved by Lubetzky's document, as I was a library school student, and today I am just slightly disappointed because he has added confusion for me rather than clarity to the situation.
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* twenties, the = años veinte, los
* twentieth century, the = siglo XX, el
* twenty-fold = veinte veces
* twenty-four (24) = veinticuatro (24)
* twenty-one (21) = veintiuno (21)
* twenty-three (23) = veintitrés (23)
* twenty-two (22) = veintidós (22)