whereupon [ˌweərə'pɔn]

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附加级

ad.于是，因此；然后

He told her she was a liar, whereupon she walked out. 他对她说她在说谎，她便愤然而去。
He saw me coming, whereupon he offered me his seat. 他看到我进来，便把他的座位让给了我。