«Elementary» is used in an operational sense and varies with the circumstances.1 Particles which may be regarded as noncomposite in low - energy experiments show definite structure in high - energy ones. (religion-online.org)
It has a very definite structure, and it has a very specific semantic interpretation; it means something, not something else, and it sounds a particular way, not some other way. (discovermagazine.com)
You see all the essays are similar to each other as they have their own definite structure; if you follow this very structure you will never be in trouble with your essay assignment writing. (custom-paper-writing.com)