Definition
to abruptly abandon someone you are involved with or something you are accountable for, typically without notice, often leading to difficulties
拋棄；遺棄；背棄
She ran out on him when he needed her support the most.
在他最需要支持的時候，她拋棄了他。
If you keep running out on your promises, no one will trust you.
如果你一直背棄你的承諾，沒有人會信任你。
He ran out on his responsibilities when the company faced difficulties.
當公司面臨困難時，他背棄了他的責任。