long     
 Adj(1) [largo (de distancia, de longitud)] long, longer, longest

~ N ~ arms, ~ axis, ~ distance
  These animals have very long arms.

Adv ~ as ~ (as) | relatively~, significantly ~ | much ~, very ~
  Their legs were as long as their arms.

 Adj(2) [largo (de tiempo, de duración)] long, longer, longest

~ N ~ development, ~ duration, ~ life span, ~ period, ~ term, ~ time
  It developed over long periods of time.

Adv ~ much ~ | relatively ~, significantly ~
  Their life span was significantly long.

 Adv [mucho, bastante (referencia temporal)] long, longer, longest

~ Adv ~ ago, ~ before, ~ enough | as ~ as
  It was discovered long time ago. | It existed long before it was used in labs. | The period was not long enough. | The process goes on as long as the cell keeps growing.
  > "As long as" es una estructura lexicalizada como conjunción. Se traduce como "siempre y cuando", "mientras que", por lo que a la referencia temporal se le añade una connotación de sentido condicional.

V ~ last ~, live ~
  The effects lasted longer than expected