one and only

基本解释

The other day that I made the one and only phone-call for telling you that I am free to marriage, but you did not give me any chance to explain.
那天我唯一一次打电话给你时，原本是想告诉你我可以结婚了，只是你没让我说。
The result show there are one and only co-integration relation among logistics development level, investment of fixed assets and economic growth, denote there are stable long term equipoise among it.
结果表明，物流发展水平、固定资产投资与经济增长之间存在唯一的协整关系，即三者之间存在长期稳定的均衡关系。
It controlled a trap door between the boxes and allowed only fast-moving (ie, hot) molecules through in one direction and only slow-moving (ie, cold) ones through in the other.
侏儒控制着两个盒子间的活动门，仅允许快速移动（热）的分子朝同一方向通过活动门，慢速移动（冷）的分子朝相反方向通过另一扇活动门。

The I.M.F.predicts developing economies will continue to grow for the year, but only by about one and one-half percent.
I think the genius of this parable hinges on the fact that the servant who was only given one talent seems to be acting so perfectly reasonably - with a laudable form of caution and hesitation, you could actually say.
我认为这则寓言的特别之处在于,那个只拿到一个金币的仆人,的行为是很合理的,-可以说是令人称赞的小心和犹豫。
耶鲁公开课 - 弥尔顿课程节选
There are only three people left in Britain who fought in World War One, only three, and they're about 110-years-old or something like that.
在英国,一战老兵,只剩下三个了,就三个,他们得有,大概110岁
耶鲁公开课 - 1871年后的法国课程节选

Inside the tech industry, companies eager to tap into all that excitement and potential revenue and brand-building are tripping over each other to position themselves as not just cloud providers but as real cloud providers, official cloud providers, the one-and-only-true cloud provider, and even as Wikipedia-approved cloud providers.
FORBES: The Cloud Revolution and Creative Destruction