arc
柯林斯詞典
1. N-COUNT An arc is a smoothly curving line or movement. 弧線(xiàn); 弧線(xiàn)運(yùn)動(dòng)
The helicopter made a slow arc, passing over the mound but not stopping. 這架直陞飛機(jī)做了一個(gè)緩慢的弧線(xiàn)運(yùn)行，飛過(guò)那座小丘，但沒(méi)停下來(lái)。
2. N-COUNT In geometry, an arc is a part of the line that forms the outside of a circle. 弧[技術(shù)]
返回 arc
arc /ɑ?k/ (arcs)
劍橋詞典
arc noun [C] (CURVE)
the shape of part of a circle , or other curved line
?。换?；弧線(xiàn)；弧形
The ball rose in a high arc and fell behind the boundary line . 球在空中高高地劃了一條弧線(xiàn)落在邊線(xiàn)外。
arc noun [C] (ELECTRICITY)
a powerful flow of electricity that goes across a space between two points
電弧，弧光 返回 arc