arc
[ɑ:rk]
n.
综合症状;
弧（度）;
天穹;
电弧，弧光。;
vi.
形成拱状物;
循弧线行进;
abbr.
American Red Cross. 美国红十字会;
例句:
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The arc is made up of tiny flickering elements.
来自SA
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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。
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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。
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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。
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Still, arc lights left much to be desired.
来自WSJ
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Their lives, however, followed a different arc.
来自WSJ
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The sun appears to mvoe in an arc across the sky.
太阳看起来在天空中以弧形运行。
来自《权威词典》
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When the moon is new it looks like an arc of light in the sky.
新月看起来像天空中的一盏弧形灯。
来自《权威词典》