adj.三边的，三方的
n.三边形

The trilateral meeting between China, Russia, and Mongolia discussed economic cooperation.
中国、俄罗斯和蒙古之间的三方会议讨论了经济合作。
The trilateral agreement on trade facilitation was signed by the US, Canada, and Mexico.
美国、加拿大和墨西哥签署了促进贸易的三方协议。
The trilateral summit aimed to enhance regional security among the three neighboring countries.
三方峰会旨在加强三个邻国之间的区域安全。
A trilateral commission was established to address environmental issues affecting the shared watershed.
建立了一个三方委员会来处理影响共享流域的环境问题。
The trilateral dialogue focused on enhancing diplomatic ties and cultural exchanges.
三方对话集中在加强外交关系和文化交流上。
The defense ministers of the three nations held a trilateral discussion on counterterrorism strategies.
三国国防部长就反恐策略举行了三方讨论。
A trilateral investment treaty was proposed to stimulate economic growth in the region.
提出了一项三方投资条约以刺激该地区的经济增长。
The trilateral exercise between the navies improved their joint operational capabilities.
海军之间的三方演习提高了他们的联合行动能力。
The trilateral education initiative aims to promote student exchanges and academic collaboration.
三方教育倡议旨在促进学生交流与学术合作。
The trilateral agreement on migration policy seeks to manage cross-border movements effectively.
关于移民政策的三方协议旨在有效管理跨境流动。