When Jack arrived he learned Mary had been away for almost an hour.
杰克到达后得知玛丽走了近一个小时了。
When Jack arrived he learned Mary had been away for almost an hour.
当杰克到来时，他才了解到玛丽已经离开差不多一个小时了。
When Jack arrived, he learned Mary had been away for almost an hour.
当杰克到时，他得知玛丽已经离开快一个小时了。
When Jack arrived, he learned Mary had been away for almost an hour.
当杰克到时，他得知玛丽已经离开快一个小时了。
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