This is a truly historic event for China's space program, making China the third nation in the world to bring samples back from the moon.

这对中国的太空计划来说是一项真正的历史性事件，也让中国成为世界上第三个从月球取回样本的国家。

youdao

I think this is a truly historic event, as this will be the first Olympic Games ever to be held in South America.

我认为这是真正意义上的历史性事件，因为这将是奥运会首次在南美举行。

youdao