arc

名词 arc:

1. electrical conduction through a gas in an applied electric field
   同义词：discharge, spark, electric arc, electric discharge
2. a continuous portion of a circle
3. something curved in shape
   同义词：bow

动词 arc:

1. form an arch or curve
   同义词：arch, curve

1. Joan of Arc was burnt (alive) at the stake.
   圣女贞德在火刑柱上被(活活)烧死。
2. The stick of carbon is often used in an electric arc lamp.
   碳精棒常用于电弧灯。
3. Joan of Arc was made a saint in 1920.
   1920年，贞德被追封为圣女。
4. Joan of Arc was one of France's greatest daughters.
   圣女贞德是法国最伟大的女性之一。
5. The sun appears to move in an arc across the sky.
   太阳看起来在天空以弧线运行。

arc

n.（名词）
Something shaped like a curve or an arch:
拱形物：形状类似曲线或拱的物体：
例句：
the vivid arc of a rainbow.
彩虹清晰的拱

Mathematics A segment of a circle.
【数学】 弧：圆周的一段
Electricity A luminous discharge of current that is formed when a strong current jumps a gap in a circuit or between two electrodes.
【电学】 电弧，弧光：当强电流在回路裂缝或两电极间跃升时形成的辉光放电
Astronomy The apparent path of a celestial body as it rises above and falls below the horizon.
【天文学】 周日弧，夜间弧：天体升起或落下地平线时的明显路径
v.intr.（不及物动词）
arced 或 arcked [ôrkt] arc.ing 或 arck.ing [ôr.kng] arcs
To form an arc.
形成拱状物
To move or seem to move in a curved path:
循弧线行进：在弯曲的路往上运动或好象在运动：
例句：
the stars that arc across the sky.
在天空中弧形运动的星

来源：
Middle English ark
中古英语 ark
from Old French arc
源自 古法语 arc
from Latin arcus
源自 拉丁语 arcus