The marrow of our proposal is a simpler billing system for small business clients.

我們提案的核心是為小型企業客戶打造更簡單的帳務系統。

During the meeting, she quickly got to the marrow of the shipping delay problem.

會議中，她很快就抓到了出貨延誤問題的核心。

Friendly, fast service is the marrow of what our customer support team offers travelers.

親切又快速的服務，是我們客服團隊為旅客提供的精髓所在。