To see such effects, physicists first have to suck out every possible quantum and leave a beam in its least-energetic "ground state".

为了目睹这种效应，物理学家首先需要吸出每一个可能的量子，让光束处于能量最小的“基态”。

youdao

He walks as lightly as possible, almost on tiptoe, in order not to wear out his heels in too short a time.

他尽量轻轻地走路，几乎是用脚尖颠著走，就是为了不要太快磨烂鞋底。

youdao

His age effectively ruled him out as a possible candidate.

他的年岁使他根本不可能成为候选人。

《牛津词典》

For example, if one bracket a second was filled out, it would take 292 trillion years to fill out all possible brackets,".

VOA: standard.2009.03.25

And even though he could figure out that this wasn't possible, he still used this as a starting point, and what he did know was that these energy levels that were within hydrogen atom were quantized.

这是不可能的了,但他还是以此为出发点，他知道，氢原子的这些能级,是量子化的,而且他也知道，我们上节课所看到现象。

麻省理工公开课 - 化学原理课程节选

So the other possible deviation we have to consider, is a deviation of the form of one of these guys dropping out.

那么另外一个我们必须要考虑的偏差,是她们俩有一个人退出选举

耶鲁公开课 - 博弈论课程节选

There is, by the way, a possible out from this argument in the case of high-skill immigrants.

FORBES: A Question for Paul Krugman

The chief Palestinian negotiator, Saeb Erekat, said Kerry has been floating the Arab initiative as a possible way out of the deadlock.

NPR: Kerry Meets Israeli Leaders To Push Mideast Peace

The secretary of state hinted at a possible way out of the morass when he talked of weapons being made permanently inaccessible.

BBC: Another political D-day looms