to discover the main cause of a problem
descubrir la causa principal de un problema (descubrir la causa principal de un problema)
"We need to get to the root of the problem before we can fix it."
"Necesitamos llegar a la raíz del problema antes de poder solucionarlo." (Necesitamos **llegar a la raíz del problema** antes de poder solucionarlo.)
to join with others for a shared goal
to know someone very well
to encourage someone to continue or try harder
see the positive side of something
to defend against something or someone
to do something risky without worrying