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adumbrate--------预告
英文释义
(transitive verb) To announce in advance; to preview.
例句
The overture to the famous opera adumbrates the themes of many great songs appearing in later acts.
这出著名歌剧的序曲预告了随后几幕中出现的很多精彩歌曲的主题。
n. 提议，提案，主动表示，序曲 v. 提议，建议
