Once again I breathed as a free man.

我又能像个自由人一样呼吸了。

《新英汉大辞典》

After resting for a short time, the boy started once more, but failed again.

休息了一段时间后，男孩又开始了，但是又失败了。

youdao

Once you've broken the seal of a bottle there's no way you can put it back together again.

一旦你撕开瓶子的封口,就没法将它重新合上。

《柯林斯英汉双解大词典》

Once again,he said the war was not a struggle for the Union, but a fight to free the slaves of the south.

VOA: special.2009.10.22

By the way, once again there's a bit of a rift there between Barthes and Foucault. Foucault wouldn't say "quite futile."

顺便说一句，这里巴特和福柯,又有了分歧，巴特不会说“没有希望“

耶鲁公开课 - 文学理论导论课程节选

Never go back. Find another. Leave at once. Go for a long trip again, but this time we'll go wherever I want, won't we?" I nodded. My Lolita.

绝不会去，另找一所学校，马上走，再去长途旅行，不过这次去我想去的地方，好吗？“我点头，我的洛丽塔。

耶鲁公开课 - 1945年后的美国小说课程节选

Now fast forward 500 years and we see China once again as a world power and once again practicing trading as a largely one sided arrangement.

FORBES: Opium Wars Revisited: Will China Corner The Gold Market?

And where invention and goals were required, the Italian side, who are third in Serie A, once again misfired in a tame display that lacked the necessary ideas and invention to break down the German outfit.

BBC: Schalke 2-1 Inter Milan (agg 7-3)

In the north Bosnian town of Doboj, a bastion of Serb chauvinism, a Muslim jeweller is once again doing a roaring trade.

ECONOMIST: The bubbling Balkans