Teoria evolutiei a lui Darwin a schimbat stiinta biologiei.
Darwin's theory of evolution changed the science of biology.
Teoria e una, practica e alta; in realitate lucrurile sunt mai complicate.
Theory is one thing, practice is another; in reality things are more complicated.
A propus o teorie noua si a prezentat-o la conferinta internationala.
He put forward a new theory and presented it at the international conference.
