疾控中心建议对13至64岁之间的人们至少进行一次的检查，而那些认为是属于高危人群的应该进行多次检查。
The CDC recommends at least one test for everyone between the ages of 13 and 64, and those considered high risk should be tested multiple times.
如果和艾滋病人来一次亲密接触，把传说中的高危人群向一般人群靠拢，市民会有何反应？
If we have a close contact with someone suffering from AIDS, and if we consider that high risk people and ordinary ones get attracted to each other, which reaction is having the man in the street?
你看见他们每周一次出现在你家门前，但其实垃圾收集工从事的工作很艰难。垃圾收集工要面对重型机器、危险的化学品和高危交通事故。
You see them once a week out the front of your house but rubbish collectors are doing a tough job that exposes them to heavy machinery, harsh chemicals and a high-risk of traffic accidents.
可是几个月后，开发者无意地回滚了所作修复，又一次让操作系统置身于有被非特权用户夺取完全根权限之可能的高危风险中。
But several months later, developers inadvertently rolled back the change, once again leaving the OS open to attacks that allow unprivileged users to gain full root access.
病人不必要每年都检测一次，但建议那些高危人群每年都要反复检测。
Patients wouldn't get tested every year: Repeated, annual testing would only be recommended only for those at high-risk.
在高危害工艺区域暂时或因某项工作需要而单独工作的人员， 在工作结束后或每两小时联系一次。
Periodic or taskspecific lone workers in HHP area, contact after the task is finished and/or once every 2 hours.
大部分妇女的常规监护包括每年一次巴氏涂片，高危妇女(如hic阳性的)一年两次。
Surveillance consists of Pap smears on a yearly basis for most women and on a twice-yearly basis for high-risk women (ie, HIV positive).
大部分妇女的常规监护包括每年一次巴氏涂片，高危妇女(如hic阳性的)一年两次。
Surveillance consists of Pap smears on a yearly basis for most women and on a twice-yearly basis for high-risk women (ie, HIV positive).
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