A valid passport is essential for all employees traveling to the Singapore conference.

所有前往新加坡參加會議的員工都必須持有有效護照。

Clear communication with customers is essential to keeping our satisfaction scores high.

與顧客清楚溝通，是維持高滿意度分數的關鍵。

Please bring only essential documents to the meeting so we can finish on time.

請只帶必要的文件來開會，這樣我們才能準時結束。