他利用社交媒体作为分享观点的平台。

He used social media as a ___platform to share his opinions.

名人拥有影响公众舆论的强大平台。

Celebrities have a powerful ___platform to influence public opinion.

这次会议为专家讨论气候变化提供了一个平台。

The conference provided a ___platform for experts to discuss climate change.