随着观者移步凑向前去，引发的唯一结果就是安全警报提示请勿靠近。
As visitors tried to move closer, the only result was yowls from the security alarm.
受伤后的身体会发出一些的信号，引起你的注意，应该将这些普通的提示作为身体发出的警报。
There are some common tip-offs you should recognize as warning signs that you have an injury that needs your attention.
这些安全系统可以发出警报来提示安检人员行李内存在可疑物品，但是它们却无法告知这些可疑物品具体是什么。
These systems can alert an operator to something suspicious, but they cannot tell what it is.
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