Every time I try to open an attachment, I keep getting an error message. Any idea what the problem might be?

每次我试图打开一个附件时总是有出错信息，你知道是什么问题吗？

youdao

There were also mixed feelings because of the group's attachment to Firefox, an icon of open source development and a hedge against Microsoft's dominance.

感觉很复杂，因为我们还和Firefox有关，Firefox是开源的代表，是对微软垄断的阻击。

youdao

Let that irony be a lesson to you: Never open an attachment, even from a friend, unless you've been told to expect it.

从这个讽刺中吸取点教训吧：千万别打开附件，就算是朋友的邮件也不可以，除非你事先得到通知。

youdao

Whereas the botnet Cutwail uses long-winded, spoof alerts explaining problems with your computer, aimed at tricking users to open an infected attachment.

FORBES: The Most Common Words In Spam Email

Attachments to e-mails remain a particularly easy place to store malicious code of all sorts, so be sure of an attachment's provenance before you open or save it.

BBC: Q&A: Phishing for your precious data