单词	pre-roll
释义	pre-rollpre-roll /ˈpriː rəʊl $ -roʊl/ noun [countable] technical an advertisement that is shown before a video on the Internet
随便看	cool hunting Coolidge, (John) Calvin coolie cooling-off period cooling system cooling tower coolly coolness coon coonskin co-op coop cooped up cooper Cooper, Alice cooperate cooperation cooperative cooperatively Cooper, Gary Cooper, Henry Cooper, James Fenimore Cooperstown Cooper, Tommy coopt

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