assiduousness

她凭借刻苦勤勉在实验室里取得了突破性的发现。

Her ___assiduousness in the laboratory led to a groundbreaking discovery.

多年的刻苦勤勉让他成为了一位技艺精湛的提琴手。

Years of ___assiduousness made him a virtuoso violinist.

这份报告的详尽程度反映了他校对时的刻苦勤勉。

The report's thoroughness reflects his ___assiduousness in proofreading.