一旦他发现了真相，那麻烦就大了。

There'll be hell to pay when he finds out.

《牛津词典》

一旦他犯了罪，就会被关进监狱。

Once he commits a crime, he will be put in prison.

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这个理论听起来怪怪的，但一旦他开始解释符合他的推理的侦探工作，怀疑就变成了对他谨慎的赞赏。

The theory sounds eccentric but once he starts to explain the detective work that went into his deduction, the scepticism gives way to wary admiration.

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As soon as he has expressed this epic ambition -Virgil explains that as soon as he's expressed this Phoebus Apollo, the god of poetry, stepped in and chided him.

一旦他表达出了这种野心,正如维吉尔写道，诗歌之神阿波罗，闯入诗歌的篇章并指责他。

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Once the sanctuary is purged, the offerer has settled his debt, he's repaired the damage he caused.

一旦圣所被净化，献祭者就还清了他的债，他为他所造成的伤害做了补救。

耶鲁公开课 - 旧约导论课程节选

And once he did that, both he and many other scientists, could then, once they understood what caused the fluorescence, make little changes to the actual protein, and tune what the properties of that fluorescent protein were.

而且一旦他做成了这个，一旦他们弄清楚了是什么导致萤光，他和其它很多科学家，就可以对蛋白质做微小的改变，调节蛋白质的荧光性质。

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