sea legs
US /ˈsiː leɡz/
UK /ˈsiː leɡz/

1.
piernas de mar, adaptación al mar
the ability to keep one's balance and not feel seasick when on a ship or boat
:
•
It took him a few days to get his sea legs on the cruise.
Le tomó unos días acostumbrarse a sus piernas de mar en el crucero.
•
After a week at sea, everyone had their sea legs.
Después de una semana en el mar, todos tenían sus piernas de mar.
2.
adaptarse, acostumbrarse
the ability to adapt to a new or challenging situation
:
•
After starting his new job, he quickly got his sea legs and became productive.
Después de comenzar su nuevo trabajo, rápidamente se adaptó y se volvió productivo.
•
It takes time to get your sea legs in a new culture.
Se necesita tiempo para adaptarse a una nueva cultura.