博物馆获得了一个来自古希腊的无价古董花瓶。

The museum acquired a ___priceless antique vase from ancient Greece.

她拥有几幅著名艺术家的无价画作。

She owned several ___priceless paintings by famous artists.

在那个困难的项目中，他的建议是无价的。

His advice was ___priceless during the difficult project.