arc
arc — 名詞
1. a smooth curved line that looks like a slice taken from a circle's edge — or any
弧形；弧線
像圓周一段的彎曲線條或形狀
a smooth curved line that looks like a slice taken from a circle's edge — or any object that bends into this kind of rounded shape.
The rainbow formed a perfect arc above the green hills near Hualien.
彩虹在花蓮綠色山丘上方形成一道完美的弧形。
noun in main clause: an arc of [thing]
Ravi drew a wide arc on the whiteboard to show the planet's path.
Ravi 在白板上畫了一道大大的弧線，說明行星的運行路徑。
collocation: draw an arc
The water from the fountain rose in a graceful arc and fell into the pool.
噴泉的水以優雅的弧線升起，然後落回水池裡。
Jin's eyebrows have a soft arc that makes her look surprised.
Jin 的眉毛有一道柔和的弧形，讓她看起來總是有點驚訝。
The gymnast's body curved into a tight arc as she swung from the bar.
體操選手的身體在離開單槓擺盪時，彎成一道緊繃的弧形。
文法句型
arc of [noun]
in an arc
用法筆記
Often paired with adjectives that describe the curve's shape or width: wide, tight, gentle, graceful. Distinguish from sense 3, which is figurative and refers to a story line, not a physical curve.
常見錯誤
2. a strong, bright stream of electricity that jumps through the air from one metal
電弧
電流跨越空氣或氣體所產生的明亮放電
a strong, bright stream of electricity that jumps through the air from one metal point to another, giving off intense heat and light.
A blue electric arc jumped between the loose wires inside the broken machine.
壞掉的機器裡，鬆脫的電線之間跳出一道藍色的電弧。
collocation: electric arc
The welder lowered his mask as a bright arc lit up the workshop.
工人放下面罩，一道明亮的電弧瞬間照亮整間工坊。
collocation: bright arc; welding context
Engineers measured the heat of the arc to test the new battery.
工程師測量電弧的熱度，用來測試這顆新電池。
When Hiro touched the faulty switch, a small arc burned his finger.
Hiro 一碰到故障的開關，一道小電弧就燒到了他的手指。
The arc between the two electrodes turned the metal rod red-hot.
兩個電極之間的電弧把金屬棒燒得通紅。
文法句型
an arc of electricity
an electric arc
用法筆記
Subject is usually the spark itself; the action verbs are 'jump', 'flash', 'form'. Frequently used with 'electric' to make the meaning unambiguous, since 'arc' alone often suggests sense 1.
常見錯誤
3. the path that a story or one character follows from beginning to end, especially
故事線
故事或角色從頭到尾的發展軌跡
the path that a story or one character follows from beginning to end, especially inside a longer film, novel, or TV series.
The writers spent months planning the villain's arc across the new season.
編劇們花了好幾個月，規劃反派在新一季裡的角色線。
collocation: character / villain's arc
Tova cried at the end because the heroine's arc finally felt complete.
Tova 在結尾哭了出來，因為女主角的故事線終於走到完整收場。
pattern: [character]'s arc
Fans complained that the show rushed the love arc in the final episodes.
粉絲抱怨這部劇在最後幾集把愛情線收得太草率。
Each book in the trilogy follows a clear arc from danger to peace.
三部曲裡的每一本書都走著一條清楚的故事線，從危險走向平靜。
The director said the young detective's arc was the heart of the film.
導演說這位年輕偵探的角色線，才是整部電影的核心。
文法句型
story arc
character arc
the arc of [story / character]
用法筆記
Almost always preceded by a noun showing whose arc it is ('character arc', 'story arc', 'redemption arc') or a possessive. Distinguish from sense 1: this sense is metaphorical and describes development over time, not a visible curve.
常見錯誤
arc — 動詞
1. to travel through the air or across a space along a smooth curved path, especial
呈弧形飛過
沿著彎曲路徑在空中移動
to travel through the air or across a space along a smooth curved path, especially upwards and then downwards.
The football arced over the goalkeeper's hands and into the net.
足球以弧形越過守門員的手，飛進了球門。
pattern: arc over [obstacle]
Bright fireworks arced across the night sky above Tamsui harbour.
明亮的煙火在淡水港上方的夜空中劃出一道道弧線。
pattern: arc across [space]
The dolphin arced gracefully out of the water and dived back in.
海豚優雅地以弧形躍出水面，又翻身潛回水裡。
Water from the broken pipe arced into the street below.
破掉的水管噴出的水，呈弧形落到下方的街道上。
Hiro watched the basketball arc towards the hoop and drop in cleanly.
Hiro 看著籃球以弧線飛向籃框，乾淨俐落地進網。
文法句型
arc + adv/prep (over, across, through, towards)
用法筆記
Almost always followed by a directional adverb or preposition (over, across, through, towards, into). The subject is something that moves and rises before falling: a ball, water, a firework, a jumping animal.
常見錯誤
2. (of electricity) to jump as a bright, hot stream from one metal point to another
放電
電流跨越間隙以明亮火花跳過
(of electricity) to jump as a bright, hot stream from one metal point to another through the air or gas in between.
Electricity arced between the damaged wires and started a small fire.
電流在受損的電線之間放電，引發了小火災。
pattern: arc between [points]
The current arced across the gap with a sharp crackling sound.
電流跨越這道間隙產生電弧，發出尖銳的劈啪聲。
pattern: arc across [gap]
Sparks arced from the loose cable as Dr. Gita pulled the plug.
Dr. Gita 拔掉插頭時，鬆脫的電纜冒出火花，跳出電弧。
The technician warned that the high voltage could arc if anyone touched the rail.
技術人員警告，高壓電一旦有人碰到軌道就可能放電。
文法句型
arc between [points]
arc across [gap]
用法筆記
Subject is the electricity, current, or spark itself, not the device. Common in technical and safety contexts. Distinguish from verb sense 1: that sense describes a physical object's curved flight, this sense describes electrical discharge.