The argument could be made that until they once disobeyed, how would they ever know that?

这一论点可以说明,若非违背过一次，他们怎能知道这些？

耶鲁公开课 - 旧约导论课程节选

So there was a big bank run and Northern Rock would have failed if the Bank of England hadn't come by to rescue them.

从而出现挤兑狂潮,若非英格兰银行施以援手,北岩银行恐怕早就倒闭了

耶鲁公开课 - 金融市场课程节选

What would Lincoln have been ? without the slave interest?

林肯若非奴隶利益,又怎会显得突出？

耶鲁公开课 - 政治哲学导论课程节选