A referendum showed beyond doubt that voters wanted independence.

全民公决毫无疑问地显示，选民要求独立。

The research showed beyond doubt that smoking contributes to heart disease.

这项研究确实表明吸烟会导致心脏疾病。

This is beyond doubt the truth.

无疑这是真相。

His honesty is beyond doubt.

他的诚实毫无疑问。

The truth of the story is beyond doubt.

这个故事的真实性毫无疑问。