Then I'm gonna draw two lines straight down.

然后垂线。

And if it's bending towards this normal line...

如果它的折射光线靠这垂线。

Drake would have learned to feel his way along the coast with his lead line.

德雷克应该学会用铅垂线沿海岸摸索前进。

Sivert especially had a genius for knocking in nails, but Eleseus was better at handling a plumb-line.

Sivert 尤其擅长敲钉子， 但 Eleseus 更擅长处理铅垂线。

When the village gathered by the construction site, Mortenson met them, plumb line, level, and ledger in hand.

当村民们聚集在建筑工地附时，摩顿森着铅垂线、水准仪和分类帐与他们会面。

For example, it is known that if we draw perpendiculars to the sides of a triangle from the opposite angles, all three perpendiculars meet in a point.

例如，众所周知，如果我们从相反的角度向三角形的边绘制垂线，则所有三个垂线都会交于一点。

" You're making everyone crazy." " Then he reached out and took my plumb line, and my level and my account book, and he walked back down to Korphe, " Mortenson says.

“你让所有人都疯。” “然后他伸出手我的铅垂线、水平仪和账簿，然后他回科尔飞，”摩顿森说。

And what the carpenter did, because he was quite a clever chap, is he went to stand on that spiral staircase and he let his plumb line down and he drew it back up.

而木匠做的， 因为他是个相当聪明的人，就是他站在那螺旋楼梯上， 放下他的铅垂线， 然后又收回来。

Above what Harry assumed was the title of the story (being unable to read runes, he could not be sure) , there was a picture of what looked like a triangular eye, its pupil crossed with a vertical line.

在哈利认为是那是故事的题目（他不会读古代魔文，因此他并不能确定），这是一张看起来像三角形眼睛的图片，瞳孔处有一道垂线。