立彬の日本語
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事前， じぜん
1. prior, beforehand, in advance, before the fact, ex ante
先前的；事先的；预先的；事前的；预先的(用于表示在事情发生之前)
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tbd
@ あらかじめ， 予め
1. beforehand, in advance, ahead of time, previously
事先；提前；提前；预先
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