Synchronized methods and blocks allow a thread to lock an object on entry and unlock the object on exit (to the method or block).

同步的方法和代码块允许线程在入口处锁定对象并在出口处解锁(针对方法或代码块)。

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The advantages of open source software extend well beyond the immediately obvious ones such as low cost of entry and avoidance of vendor lock in.

开源软件的优势非常的明显，例如引入成本低，并且避免厂商的枷锁。

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Green believes the best way to improve GPS driving safety would be to "lock out destination entry while the [navigational] system is in use."

Green相信，改善GPS驾驶安全的最好方法应该是“当[导航的]系统在用的时候锁定目的地输入功能。”

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As an example, last year at the Dubai Police Headquarters we taught forty criminal investigative agents about lock forensics and covert entry in an intensive hands-on setting.

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