The important point concerning the complementary distribution is to specify the environment where the individual sounds occur

Before we examine Emmet's theory, we must clarify the concept of 'internal symmetry.

It is clearly shown in Johnson's investigation that passive smoking is very harmful

He has no distinct idea of how to proceed

The point we must clarify here is that the lines between amateur and professional in sport are beginning to disappear

The authors state quite categorically that the female members of only a small number of species also sing

The first point that requires clarification is that the design was purely experimental