许多科学家质疑丹尼肯关于金字塔由外星人建造的说法。

Many scientists question ___Daniken's claims that aliens built the pyramids.

这部纪录片探讨了丹尼肯式的理论，认为金字塔可能是外星人建造的。

The documentary explores ___Daniken-style theories that pyramids might have been built by aliens.