二年一次 meaning in English

biennialy
biyearly

Dragons are so wise that they have been royal advisors
龙年,每十二年一次,是幸运的。
Pig years , which occur every 12 years , are considered auspicious
十二年一次的猪年被认为是吉祥年。
The year of the dragon , which takes place ever twelve years , is lucky . present - day oriental astrologers claim that children born during dragon years enjoy health , wealth , and long life
龙年,每十二年一次,是幸运的。现在东方诸国的占星家宣称在龙年期间出生的孩子享受健康，财富和长寿。