arc
英 [ɑːk]
美 [ɑːrk]
- 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
使用频率:
记忆方法
1、arc- => arc.
中文词源
arc 弧
来自PIE *arku, 弯，拱。
英语词源
- 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.
权威例句
- 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。
- 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。
- 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。
- 4. the arc of a rainbow
- 彩虹的弧形
- 5. Joan of Arc was burnt at the stake .
- 圣女贞德被处以火刑。
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