at the most advanced position in a field
en la posición más avanzada en un campo (en la posicion mas avanzada en un campo)
"The lab is at the cutting edge of medical research."
"El laboratorio está en la vanguardia de la investigación médica." (el laboratorio esta **en la vanguardia** de la investigacion medica)
to support or help someone when they need it
a small action that leads to progress towards a goal
unable to think clearly or remember something
to be at the forefront of an action or movement
in the international arena or community
to speak very positively about someone or something