词典释义：
an inspection or viewing of something before it is bought or becomes generally known and available
预审；预观
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you can get a sneak preview of the pictures on sale .对这些即将出售的画你可以先睹为快。
a showing of a film, play, exhibition, etc., before its official opening
（电影）试映；（戏剧）预演；（展览会）预展。
a short item shown in a cinema as publicity for a forthcoming film; a trailer
（电影）预告；预告片。
a commentary on or appraisal of a forthcoming film, play, book, etc., based on an advance viewing
（预先看电影、戏剧、书等后所作的）预告性述评。
【计算机】 打印预览。
display (a product, film, play, etc.) before it officially goes on sale or opens to the public
预展（产品）；试映（电影）；预演（戏剧）
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the company will preview an enhanced version of its database .公司将预展其数据库的升级版。
see or inspect (something) before it is used or becomes generally available
预先检查；预审
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the teacher should preview teaching aids to ensure that they are at the right level .教师应当预先检查教具以确保其位置高低合式。
comment on or appraise (a forthcoming event) in advance
预评；预测
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next week we'll be previewing the new season .下周我们将对新赛季作预评。
