This is not just a simple translation dictionary. It covers the complexity of language and gives you many ways of dealing with this complexity. You must read the instructions carefully to get full benefit from this dictionary.
In some ideal sense it is impossible to translate from one language to another as each language is ultimately idiomatic. But this is addressed implicitly by this dictionary. It must be one of the best.
Thomas Steffens about Collins-Robert Concise, v2.3