ceremonial adj. 正式的
advisory body 顾问团
democratic reforms 民主改革
theme n. 主旋律,主题
We will firmly grasp the theme of peaceful development of relations across the Taiwan Strait ... and constantly strengthen the political, economic and cultural foundation and public support for the peaceful development of cross-Strait ties."我们会紧紧把握两岸关系和平发展的主题,...不断夯实两岸和平发展的政治、经济、文化和民意基础。