Después de pasar toda su vida en el campo, se cayó del nido cuando llegó a la gran ciudad y todo le parecía extraño.
After spending his whole life in the countryside, he was very naive when he arrived in the big city and everything seemed strange to him.
Los jóvenes que se mudan solos por primera vez suelen caerse del nido y cometer errores por falta de experiencia.
Young people who move out alone for the first time tend to be very inexperienced and make mistakes due to lack of experience.
No le pidas demasiado a Carlos, se cae del nido en cuanto le hablan de responsabilidades complicadas.
Don't ask too much of Carlos; he is very naive as soon as they talk to him about complicated responsibilities.
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