cloze in on
集中注意力
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Once an email message is read on Cloze, it can be automatically marked as read in one's real inbox, but Twitter and Facebook posts were often replicated in both places.
WSJ: Review of Cloze: An Email Inbox That Knows Who's Important
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