想像自己困在一條狹窄的巷子裡，已經退無可退，只能往前走。那種被逼到角落、進退兩難的感覺，正是這句話要表達的意思。一般認為它來自很直觀的畫面：在打鬥或對峙時被逼到牆邊，背貼著牆，沒有空間可以後退。
with one’s back to the wall 指的是身處絕境或困境、選擇非常有限，往往還得承受壓力、不得不採取行動。常用在形容一個人被逼到必須做出艱難決定，或不得不拼命一搏，因為已經沒有輕鬆退路的時刻。
應用
• 使用頻率：7/10
• 適用場合：Casual, Professional
例句
• When the client threatened to pull the contract last week, I had my back to the wall and worked through the night to finish the proposal.
(上週客戶說要取消合約，我被逼到牆角，只好通宵把提案趕完。)
• With the project deadline looming and no more budget, we really have our backs to the wall on this one.
(專案的死線快到了，預算也沒了，我們這次真的是被逼到牆角了。)
• After losing his job and missing three mortgage payments, Jake really had his back to the wall.
(Jake失業又連續三個月沒繳房貸，真的是走投無路了。)
