这位导演的作品已经进入了主流电影行业。

This director's work has entered the ___mainstream film industry.

甚至一些主流媒体机构也被指控传播错误信息。

Even some ___mainstream media outlets have been accused of spreading misinformation.

她的时尚风格相当传统，符合主流趋势。

Her fashion style is quite conventional and aligns with ___mainstream trends.