فلش‌کارت‌ها

The indefinite articles 'a' and 'an' both mean 'one' or refer to a non-specific singular countable noun. They do not alter the meaning of the word that follows. The variation exists purely for phonetic ease: placing 'an' before a vowel sound prevents two vowels from colliding awkwardly in rapid speech.

David earned a university degree in computer engineering.