As runners, you're outside. And we generally, you know, we try not to leave a trace out there.

捡跑活动的参加者都是在户外运动。我们基本上都会做到不留一丝痕迹。

It's not too hard to see that all those possible normal vectors trace out the surface of a sphere.

不难看出，所有这些可能的 法线向量都在球体表面上。

They went back to Kirrin Cottage and traced out the map carefully.

他们回到麒麟小屋，仔细地描摹着地图。

Looking down from the Sierra Blanco, one sees a pathway traced out across the desert, which winds away and is lost in the extreme distance.

从布兰卡山脉往下观看，可以看见一条小路，曲曲弯弯地穿过沙漠，消逝在遥远的地平线上。

He tried to trace out the ancient harbor of Ephesus.

他试图找出以弗所古港的踪迹。

The first option is to direct the electron beam to trace out shapes.

第一种选择是引导电子束描绘出形状。

We can't trace the workings out or thought process of any single decision.

我们无法追踪任何单一决定的运作或思考过程。

" There's power here, " said Mr. Jaggers, coolly tracing out the sinews with his forefinger.

" 这里有力量，" 贾格斯说，用食指冷静地追踪着这些小食。

So I would use ink, and I would trace out what I saw on the floor.

所以我会用墨水， 我会描出我在地板上看到的东西。

Fischman: Thaiss was one of the scientists who traced out the rows of dominoes, as you put it.

费什曼：正如你所说，泰斯是追踪多米诺骨牌的科学家之一。

Travelers trace the progress out of ancient times through the ages, as if enjoying an epic play.

游人追溯古往今来，仿佛欣赏一出史诗大戏。

That tip will trace out some kind of flat sheet cutting through the origin of three dimensional space.

这个尖端会勾勒出某种平面 穿过三维空间的原点。

And then we were able to trace out the way in which income diverged across countries, particularly when industrialization came.

然后我们就能够追踪各国收入差异的方式，特别是当工业化到来时。

Then we trace those threads of potential out into the future, asking: What might it feel like to live in this future?

然后我们追溯这些潜在的线索到未来， 问：生活在这个未来会是什么感觉？

On one of my summer visits, I witnessed smog so heavy it completely blanketed the air, obscuring the stars I wanted to trace out of the night sky.

一年夏天，我看到严重的雾霾弥漫在空气中，遮挡住了夜空中我想追逐的星星。

Tracking its movement in minute detail, researchers found that the snail's wingtips trace out a figure of eight to generate lift, just like of those of an insect.

研究者仔细追踪这种海螺的运动，发现它的翅膀末端能伸出数字8那样的形状来产生支撑力，就像其他昆虫那样。

I could trace out where every part of the old house had been, and where the brewery had been, and where the gates, and where the casks.

我可以追踪到老房子的每一部分曾经在哪里， 啤酒厂在哪里， 大门在哪里， 木桶在哪里。

Methinks I have seen just such figures, when the sun has been shining through a richly painted window, and tracing out the golden and crimson images across the floor.

我想我就见过这样的人物，当阳光透过一扇彩绘的窗户照进来， 在地板上描出金色和深红色的图像时。

19.the task, that is, of investigating the relations between the manifest content of dreams and the latent dream-thoughts, and of tracing out the processes by which the latter have been changed into the former.

这个任务就是研究梦的显性内容和梦的潜在思想之间的关系，并找出后者转变为前者的过程。

To observe and define his character, however, under such disadvantages, was as difficult a task as to trace out and build up anew, in imagination, an old fortress, like Ticonderoga, from a view of its grey and broken ruins.

然而，在这样的不利条件下观察和定义他的性格，就像从灰色和破败的废墟中描绘出并在想象中重建一座古老的堡垒一样困难，就像提康德罗加一样。