This gives you double security.
这使您双重安全。
Security mechanisms can be a double-edged sword.
安全机制是一把双刃剑。
To view more information about the security, double click on the lock.
查看更多有关安全的信息，双击那个锁的图标。
South Africa now has 300, 000 private security guards, almost double the number of police.
在南非，目前有300,000名私人保安，几乎是警察的两倍。
South Africa now has 300, 000 private security guards, almost double the number of police.
在南非，目前有300,000名私人保安，几乎是警察的两倍。
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