夜空中的星星闪烁着微弱的光芒。

The stars in the night sky show a faint ___scintillation.

他的演讲充满了机智的火花，让所有听众都为之倾倒。

His speech was full of ___scintillation, leaving the entire audience spellbound.

科学家通过测量材料的闪烁现象来检测放射性。

Scientists detect radioactivity by measuring the ___scintillation in materials.