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Chen Wei and Susan are walking down the street when they saw an accident.
陈伟和苏珊正沿着街道向前走，就在这时他们看到了一个交通事故。
youdao
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Chen Wei and Susan are walking down the street when they see an accident.
陈伟和苏珊沿街而行时，看到一起事故。
youdao
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Chen Wei and Susan are walking down the street when they see an accident.
陈伟和苏珊沿街而行时，看到一起事故。
youdao