zenith

The zenith of the space race coincided with the Apollo moon landings in 1969.太空竞赛的顶点与1969年阿波罗登月吻合。

At its zenith, the university's environmental programme attracted students from eighty countries.在其鼎盛时期，该大学的环境项目吸引了来自八十个国家的学生。