adv. triennially
布什行政当局将古巴裔美国人前往古巴旅游的次数从每年一次削减为每三年一次，并且不遗余力地强化一项禁令，即禁止其他美国人前往古巴旅游。
George Bush's administration has cut family visits by Cuban-Americans, from once a year to once every three years, and has been zealous in enforcing a ban on travel to the island by other Americans.
不过，我会坚强地度过高中三年的每一步。
However, I will get stronger and get through every step of high school three years.
作为一个刚刚花了三年时间给青春期少年全职教书的人，我亲身有体会，从9岁到14岁的每一年都有多么翻天覆地的变化。
As someone who just spent three years teaching adolescents year-round, I know firsthand that the differences between each age in the 9-14 bracket is PHENOMENAL.
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