I'm not sure that this is the most valuable use of my time.

　　我不能肯定我的時間這樣來安排最有價值。

　　These measures would make a valuable contribution towards reducing industrial accidents.

　　這些措施將會對減少工業事故起重要的作用。

　　The book provides valuable information on recent trends.

　　此書就近來的發展趨勢提供了寶貴的信息。

　　Our experience as refugees taught us many valuable lessons.

　　我們流亡的'經歷給了我們許多寶貴的教訓。

　　He gained valuable experience whilst working on the project.

　　從事這項工程使他獲得了寶貴的經驗。