The legal team says our contract with the supplier is airtight, so we can proceed.

法務團隊表示我們與供應商的合約無懈可擊，所以可以繼續進行。

Before the board meeting, make sure your budget proposal is airtight and fully supported.

董事會開會前，請確保你的預算提案無懈可擊且有充分依據。

The auditor found the company's financial records airtight, with no errors or gaps at all.

稽核人員認為公司的財務紀錄無懈可擊，完全沒有錯誤或漏洞。