beforehand
adverb uk/bɪˈfɔː.hænd/ us/bɪˈfɔːr.hænd/
事先,预先
earlier (than a particular time)
I knew she was coming that afternoon because she had phoned beforehand to say so. 我知道她那天下午要来,因为她事先打电话跟我说过。
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