last resort

基本解释

By a last-resort evolutionary adaptation, female sharks, it turns out, are capable of parthenogenesis, or virgin births.
凭这招进化适应性的杀手锏，雌性鲨鱼原来可以单性生殖，或者说，以童贞女之身怀孕生产。
The Fed is now lender-of-last-resort not just to commercial banks but to big investment banks as well (a concession that will surely in time demand tighter regulation).
美联储的最后贷款人角色不再仅仅针对商业银行，对大型投资银行也同样有效（当然了，作为代价，投资银行最终得接受更严格的监管）。
Over the weekend, the head of the Bundesbank, Jens Weidmann warned that such bond purchases were against the ECB's rules, and he ruled out a lender-of-last-resort role for the central bank.
周末，德国联邦银行总裁Jens Weidmann警告这样购买债券违反欧洲央行的规定，他否定了央行的最后贷款人制度。

But remember that dipping into retirement accounts to pay tuition should be a last-resort option.
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Central banks have practiced this lender-of-last-resort function with reckless abandon, provoking bank failures and monetary crises galore.
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Even the cotton fields in Xinjiang—a last-resort destination of millions of poor farmers—are no longer a viable option.
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