病毒一清除，就可以安全地重新连接互联网。

Once you have removed the virus it is safe to reconnect to the Internet.

《牛津词典》

随着黑客的出现，从防病毒程序到防火墙的层层安全措施被添加进来，试图阻止他们。

As hackers turned up, layers of security, from antivirus programs to firewalls, were added to try to keep them at bay.

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为阻止冠状病毒传播，人们不再使用往常的问候方式，而是发明出安全的做法。

To help stop the spread of coronavirus, people give up their usual greeting styles and invent safe ways.

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