• n. 弧（度）；弧光（全称electric arc）；弧形物；天穹
• adj. 圆弧的；反三角函数的
• vt. 形成电弧；走弧线
• n. (Arc)人名；(法)阿尔克

来自PIE *arku, 弯，拱。

arc

arc: see arch

arc (n.)

late 14c., originally in reference to the sun's apparent motion in the sky, from Old French arc "bow, arch, vault" (12c.), from Latin arcus "a bow, arch," from PIE root *arku- "bowed, curved" (cognates: Gothic arhvazna "arrow," Old English earh, Old Norse ör; also, via notion of "supple, flexible," Greek arkeuthos, Latvian ercis "juniper," Russian rakita, Czech rokyta, Serbo-Croatian rakita "brittle willow"). Electrical sense is from 1821.

arc (v.)

1893, in the electrical sense, from arc (n.). Meaning "to move in an arc" attested by 1954. Related: Arced; arcing.

1. A group of actors are rehearsing a play about Joan of Arc.

一群演员正在排演一出关于圣女贞德的戏。

来自柯林斯例句

2. Joan of Arc was finally canonized by Pope Benedict XV in 1920.

圣女贞德终于在1920年由教皇本尼狄克十五世封为圣徒。

来自柯林斯例句

3. His pass described a perfect arc through the leaden sky.

他的传球在阴沉的天空中划出了一道完美的弧线。

来自柯林斯例句

4. the arc of a rainbow

彩虹的弧形

来自《权威词典》

5. Joan of Arc was burnt at the stake .

圣女贞德被处以火刑。

来自《权威词典》