Arc
01
弧, 圆的一部分
(geometry) a part of a circle, which is curved
例子
In a circle, a minor arc is shorter than a major arc.
在一个圆中，弧的小弧比大弧短。
The length of an arc can be calculated using the radius and the angle in degrees.
弧的长度可以使用半径和角度（以度为单位）来计算。
02
弧, 曲线
a curved shape, or something shaped this way
03
电弧, 放电
electrical conduction through a gas in an applied electric field
04
弧, 情节线
the main theme or the continuous line in which a narrative develops
to arc
01
形成拱形, 弯曲
form an arch or curve
