At the start of the movie, an arc of plasma arises close to the surface and balloons outward into space.

影片开始时，等离子体的弧线上升接近太阳表面并向太空膨胀。

youdao

And also, the electric arc erosion of contact materials is engendered by heat effect of arc and other discharge phenomenon during the open and close of electric contact materials.

还发现触头材料的电弧烧损主要是触点在断开和闭合的过程中，产生电弧或其它放电现象的热效应所造成的。

youdao

The time estimation of arc movement was more close to the linear movement with the arc length than the chord length.

对弧线运动的时间估计，相比较与其运动轨迹等长的直线运动，更加接近于与其弦长等长的直线运动。

youdao

The arc of this luminous talent, as I see it, reached its apogee toward the close of the millennium, and then partly withdrew into enigma and opacity.

NEWYORKER: Laureate of Terror