CCBN造句怎么写

主会场外的大屏幕循环播出CCBN宣传短片，极大的烘托了现场气氛并成为主题报告会的又一大亮点。

The electronic screen outside the main venue played the promo of CCBN in loop, which greatly enhanced the atmosphere of the conference and constituted another feature of the keynote speeches.