Your feedback on the draft proposal was invaluable, so thank you for reviewing it quickly.

你對提案草稿的意見非常寶貴，謝謝你這麼快就幫忙審閱。

Our logistics coordinator's experience proved invaluable when the shipment was delayed at customs.

貨物在海關延誤時，我們物流協調員的經驗證明是極其寶貴的。

The tour guide gave us invaluable tips on avoiding crowds at the museum.

導遊提供我們避開博物館人潮的寶貴建議。