The customer's complaint required escalation to a senior manager after the first reply failed.

第一次回覆無效後，這位客戶的投訴必須升級給資深經理處理。

Our supplier warned of a sharp escalation in shipping costs due to fuel prices.

我們的供應商警告，由於燃料價格上漲，運費將大幅攀升。

The board approved an escalation of the marketing budget to match our competitor's spending.

董事會核准加碼行銷預算，以追上競爭對手的支出。