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单词 Least time
释义

Least time

原声例句
新概念英语.词汇随身听.第一册

He finished the work in the least time.

他在最短时间内完成了任务.

VOA慢速英语_美国

The documents are from at least the time when Biden was vice president.

这些文件至少来自拜登担任副总统期间。

当月 VOA Special English

They include roses which have been around since at least Jefferson's time.

其中包括至少在杰斐逊时代就已经存在的玫瑰。

海底两万里(原版)

Dinnertime, my fine harpooner? I'd say at least breakfast time, because we've certainly woken up to a new day.

老实的鱼叉手,晚餐时候吗?恐怕至少是午餐时候了,因为从昨天算起,我们现在是在过第二天了。

魔鬼经济学

You have more time for whaling expeditions, at least.

至少你有更多的时间去捕鲸探险。

Sway

On these American platforms, the power of that kind of rhetoric and leadership is amplified at least times four.

在这些美国平台上,那种言辞和领导力的力量至少被放大了四倍。

After Hours

So obviously I need to spend at least a little time tonight talking to you guys about this Facebook rebranding.

显然,今晚我需要至少花一点时间与大家讨论 Facebook 的品牌重塑。

TED Radio Hour

There I was - Lilly, the baby born a brown girl, rubbing elbows, or at least time slots, with comedy royalty.

我就在那里——莉莉,一个棕色皮肤的女孩,与喜剧皇室擦肩而过,或者至少是在某些时间段。

TED演讲(音频版) 2022年3月合集

(Applause) There I was, Lilly, the baby born a brown girl, rubbing elbows, or at least time slots, with comedy royalty.

(掌声)莉莉, 我生下了一个棕色皮肤的女孩,与喜剧皇室擦肩而过, 或者至少有一段时间。

电台实验室

So he made this decision, and to this day—or at least the last time we spoke—he felt he did the right thing.

所以他做出了这个决定,直到今天——或者至少在我们上次谈话时——他觉得自己做了正确的事情。

BBC 听力 2014年10月合集

I mean, people add their posts or diary entries, with some regularity, if you're a blogger you do it daily at least, often several times a day.

我是说,人们会有规律地把他们的发表内容或者日志加上去;你要是个博主,你至少每天都会写博,通常一天会写几次。

科学快报-科学美国人Science Quickly, from SCIENTIFIC AMERICAN

It's more of that AI inaccuracy in action, exacerbated by search engine optimization—though at least this time around it was pretty funny, and not outright harmful.

更多的是人工智能在行动中的不准确性,搜索引擎优化加剧了这种不准确性——尽管至少这一次非常有趣,而且并不是完全有害的。

演员对谈(双语精选)

And then also Christa Miller, who plays my neighbor, has done a ton of comedy but hasn't gotten to show this kind of range in at least a long time, and to watch those three just slaughter.

还有我邻居的扮演者克里斯塔·米勒,她演了很多喜剧,但至少很久没有这样的表演机会了,看着这三个人简直是表演盛宴。

美语情景对话

The ratio is closer to 50-50 men and women, which isn't – at least that time wasn't – I don't have the current statistics, but it isn't that kind of ratio for the Army as a whole or the military as a whole.

男女兵的比例接近50对50,虽然我没有具体的数据,不过至少在当时,整体来说陆军的男女比例并不是这样的。

中文百科

费马原理 Fermat's principle

(重定向自Least time)
皮埃尔·德·费马
光线从点Q传播至点O时,会被半圆形或混合形镜子反射,最终抵达点P。
光线从点Q传播至点O时,会被混合形状镜子反射,最终抵达点P。
光在平面上的反射

费马原理(Fermat principle)最早由法国科学家皮埃尔·德·费马在1662年提出:光传播的路径是光程取极值的路径。这个极值可能是最大值、最小值,甚至是函数的拐点。 最初提出时,又名「最短时间原理」:光线传播的路径是需时最少的路径。

费马原理更正确的称谓应是「平稳时间原理」:光沿着所需时间为平稳的路径传播。所谓的平稳是数学上的微分概念,可以理解为一阶导数为零,它可以是极大值、极小值甚至是拐点。

费马原理是几何光学的基本定理。用微分或变分法可以从费马原理导出以下三个几何光学定律:

最短光时线可以有多条,例如光线从椭圆面焦点A经过反射到另一焦点B,可以有无数条路径,所有这些路径的光线传播时间都相等。

英语百科

Fermat's principle 费马原理

(重定向自Least time)
Fermat's principle leads to Snell's law; when the sines of the angles in the different media are in the same proportion as the propagation velocities, the time to get from P to Q is minimized.
Pierre de Fermat
皮埃尔·德·费马
光线从点Q传播至点O时,会被半圆形或混合形镜子反射,最终抵达点P。

In optics, Fermat's principle or the principle of least time is the principle that the path taken between two points by a ray of light is the path that can be traversed in the least time. This principle is sometimes taken as the definition of a ray of light. However, this version of the principle is not general; a more modern statement of the principle is that rays of light traverse the path of stationary optical length with respect to variations of the path. In other words, a ray of light prefers the path such that there are other paths, arbitrarily nearby on either side, along which the ray would take almost exactly the same time to traverse.

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更新时间:2025/6/22 9:18:58