Could you give us a definite answer about the budget before Friday's meeting?

你能在週五開會前給我們一個關於預算的明確答覆嗎？

The supplier has not yet confirmed a definite delivery date for our shipment.

供應商尚未確認我們這批貨的確切交貨日期。

We need a definite decision on the new hire by the end of this week.

我們需要在本週結束前，對新人錄用做出明確的決定。