to continue making great efforts toward achieving something
continuar haciendo grandes esfuerzos para lograr algo (continuar haciendo grandes esfuerzos para lograr algo)
"He always tells his students to keep striving for excellence."
"Él siempre les dice a sus estudiantes que sigan luchando por la excelencia." (él siempre les dice a sus estudiantes que **sigan luchando por** la excelencia)
to connect or cooperate with people from different groups
to attack someone suddenly
to continue doing something difficult until the end
to give up something through a trade or compromise
to start feeling comfortable enough to share your emotions
to complete promises or obligations made to others