1. The intern likely took the letter again once nobody was watching it. 这个实习生很有可能在没人看管的时候又拿走了这封信。
2. It would now be difficult for an intern, visitor or a thief to steal a document like this. 现在对于实习生、访客或小偷来说,要偷这样的文件是很困难的。
3. "Word got out that it was missing when someone asked to see the letter for research purposes," and the intern put the letter back. “据说,当有人请求借阅这封信做研究时,才发现它丢了。” 但这个实习生归还了这封信。