1. The global diabetes community recently gathered in Cape Town, South Africa for its triennial World Diabetes Congress. 最近全球糖尿病社团聚集到了南非的开普敦，参加三年一次的世界糖尿病会议。
2. Now, as the triennial CITES meeting gets under way in Doha, both Tanzania and Zambia say they want to do something similar. 现在，当三年一度的CITES会议在多哈举行期间，坦桑尼亚和赞比亚都表示，他们也希望依此出售一些象牙。
3. As Rotary grew, the triennial Council on Legislation became the organization's chief legislative meeting, and speeches and entertainment took center stage at the annual meeting. 随著扶轮的成长，三年一度的立法会议遂成为扶轮组织的主要立法集会，每年一度的国际年会主要节目为演讲及娱乐。
英英解释
n.
1. the 300th anniversary (or the celebration of it)
2. occurring every third year or lasting 3 years
