quadrennial

adj.

继续四年的，每四年一次的；

Quadrennial Diplomacy and Development Review
Primary liver cancer. Quadrennial review lecture.
Primary cancer of the liver. Quadrennial review
The quasiquadrennial oscillation of Jupiter's equatorial stratosphere
Quasi-quadrennial and quasi-biennial variability in the equatorial Pacific
The quasiquadrennial oscillation of Jupiter%27s equatorial stratosphere
Quadrennial diplomacy and development review (QDDR): Leading through civilian power
A mechanistic model of the quasi-quadrennial oscillation in Jupiter’s stratosphere
Leading through civilian power: The first quadrennial diplomacy and development review.
Productivity of seven clones of willow coppice in annual and quadrennial cutting cycles