十年间[的]
Decennary \De*cen"na*ry\, n.; pl. {Decennaries}. [L. decennium a period of ten years; decem ten + annus a year.] 1. A period of ten years. 2. (O. Eng. Law) A tithing consisting of ten neighboring families. --Burrill.
decennary n : a period of 10 years [syn: {decade}, {decennium}]