featurette

Featurette: The Invasion: Snatched - How do you invade without ships, planes or bombs?

致命入侵:-何做到没有舰队入侵，是计划或炸弹？

Also there is a 1960's featurette included on the northern lights that is enjoyable too.

并且还有一部20纪60年代描绘北极光的，也很有观赏性。