一排人；一组人；一批东西；球员的阵容；排成行，排成直线；

1. 一组人；一批东西
    A line-up is a group of people or a series of things that have been gathered together to be part of a particular event.

line-up在线翻译

    e.g. Ryan Giggs is likely to be in Wales''s starting line-up for their World Cup qualifying match...
           瑞恩·吉格斯可能出现在威尔士队世界杯预选赛的首发阵容中。
    e.g. The programme is back for a new series with a great line-up of musicians and comedy acts.
           该节目重新开播了，新系列中汇集了一大批音乐家和喜剧剧目。

2. （为识别嫌疑犯）警方安排有待辨认的一列人
    At a line-up, a witness to a crime tries to identify the criminal from among a line of people.

    e.g. He failed to identify Graham from photographs, but later picked him out of a police line-up.
           他没能从疑犯照片中指认出格雷厄姆，但后来在警方安排的列队辨认中把他挑了出来。