He was affable at one moment, choleric the next.

他时而友善和蔼，时而暴躁易怒。

《柯林斯英汉双解大词典》

They were so alive at one moment, so clearly no longer attached to the earth the next.

这一个时刻他们还活着，下一个时刻却显然不再与大地相连。

youdao

Indeed, closed timelike curves can make it impossible to de-fine "the universe at one moment in time."

事实上，封闭的时间型曲线能让“在某个特定的时刻中的宇宙”不能自圆其说。

youdao

"Mister President, the only hot war we've got running at the moment is the one in Vietnam."

VOA: special.2009.08.16

You may feel one emotion at one moment, different emotion the next. That's Ok.

你可能先体会到一种情绪，然后又体会到另一种，这没关系。

哈佛公开课 - 幸福课课程节选

Milton, who is writing at the present moment of December of 1629, is claiming the capacity to arrive at a moment in history that he has already described as a long-completed one.

这首诗作于1629年12月，这时弥尔顿正在慢慢具备他达到历史性时刻的能力,而这时他也已经被这样称赞着。

耶鲁公开课 - 弥尔顿课程节选

Unthinkable at one moment, the strategy became practically compulsory in the next.

NEWYORKER: Shapes of Things

Yet to come (and be placed) is a marine-safety agency, at one moment destined for that mighty seaboard power, Luxembourg, until France rocked the boat with a claim from Brest.

ECONOMIST: The EU family spreads its wings

At one moment she says she would like to go to Australia, where her father's three sisters and mother are settled, after finishing her studies at a Baptist college in the camp.

NPR: Refugees Face Uncertain Future As Myanmar Opens