decade      
noun [ C ] uk/ˈdek.eɪd/ /dekˈeɪd/ us/ˈdek.eɪd/ /dekˈeɪd/
B2 十年;年代
a period of ten years, especially a period such as 2010 to 2019
 - More examples
 - Air traffic has increased 30% in the last decade.
 - They predict that a large earthquake will strike the east coast before the end of the decade.
 - Environmental awareness has increased dramatically over the past decade.
 - Her acting career spanned almost six decades.
 - India attained independence in 1947, after decades of struggle.