He believed that it was preferable to maintain ...Filipinas considera que es preferible conservar ...
They're believed to be extinct.Se la considera extinta.
On the one hand it was believed that manufacturing generated growth ...Por una parte se considera que la actividad manufacturera genera crecimiento ...
He believed that there are two necessary qualities: political will ...Considera que existen dos calidades necesarias: voluntad política ...
It is widely believed that the number of ...Se considera que el número de ...
More than 30 species are believed to endemic to the area ...Se considera que existen más de 30 especies endémicas ...