key-out的用法和樣例：
例句
用作名詞 (n.)
- With our supplies cut off, we were out on a limb.
由於給養被切斷，我們陷入了困境。 - The import of oil from abroad was cut off when the war broke out.
戰爭一爆發從國外進口石油就被切斷了。 - Server timed out waiting for request.
等等請求時伺服器斷開連接。 - Nothing can prevent us from carrying out the plan.
什麼也無法阻擋我們去實施這個計劃。 - The Ming adopted a new strategy to keep the nomadic Mongols out by constructing walls along the northern border of China.
明朝採取了一個新的策略通過沿中國北方邊界建造長城來阻擋游牧的蒙古。
