In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

Q: He was the first Chair of the British Association for Applied Linguistics , 1967 – 70 , and was instrumental in developing the field of applied linguistics in the United Kingdom .

A: He was the first chairman of the British Association for Applied Linguistics , 1967-70 .
****
Q: Wave – particle duality is the concept in quantum mechanics that every particle or quantum entity may be partly described in terms not only of particles , but also of waves .

A: Wave – particle duality means that all particles show both wave and particle properties .
****
Q: Big hair is a hairstyle that emphasizes large volume or largely styled hair , especially when those styles make the hair occupy a large amount of space above and around the head .

A:
Big hair is a term used to describe hair that has a lot of volume and sticks up around the head .
****