Besides, they should revise their emergency preparedness plans and tighten security.
此外，他们应该修改他们的应急准备计划，并加强安全。
The blast was certain to increase unease in the foreign community, and many embassies immediately took new precautions to tighten security.
这次爆炸无疑增加了外国使团的不安，许多大使馆立即采取新的防范措施以确保安全。
A Microsoft Research team led by Helen J. Wang has created Gazelle (PDF), a browser-based OS, with the declared intent to tighten security when going online.
由Hellen J.Wang带领的一个微软研发团队提出了浏览器上的操作系统 Gazelle(PDF)，目的是加强网上冲浪的安全性。
So, unless you know exactly what you need to deny, you should tighten the security by implementing e.g. better password policies and restrict users' workstations.
所以，除非你明确知道这个应该拒绝，否则你应该做的是加强安全实施，例如：更好的密码策略和限制用户的工作站。
Meanwhile, we will tighten up our security by deploying security guards for more frequent patrol.
同时，本部亦会派遣保安员加密巡逻以加强本苑保安。
Meanwhile, we will tighten up our security by deploying security guards for more frequent patrol.
同时，本部亦会派遣保安员加密巡逻以加强本苑保安。
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