longest
[ˈlɔ:ŋ]
adj.
长的;
（距离，长度）长的( long的最高级 );
长时间的;
（因忙或不愉快等）似乎比实际时间长的;
长音的;
例句:
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She studied him for the longest time, looking wryly amused.
她面带苦笑，盯着他看了很长时间。
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Mr. Kelly is the city's longest-serving police commissioner.
来自WSJ
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Bradley will go down in history as Los Angeles' longest serving mayor.
布拉德利将作为洛杉矶任期最长的市长被载入史册。
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The mental scars will take the longest to heal.
来自THETIMES
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He produced "A Chorus Line", Broadway's longest running show.
他制作推出了《歌舞线上》这一百老汇经久不衰的剧目。
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The longest day is equall to the longest night.
来自N. Carpenter