they have mapped
Present perfect they conjugation of map.
See all conjugations of map

map

By analysing land cover data collected by satellites such as NASA's Landsat series and the French Systeme Pour l'Observation de la Terre (SPOT), they have mapped forest cover from 1996-2007.
En analysant des données sur la couverture terrestre collectées par des satellites tels que la Série Landsat de la NASA et le Système Pour l'Observation de la Terre (SPOT) français, ils ont dressé la carte de la couverture forestière de 1996 à 2007.
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