引用队列是垃圾收集器向应用程序返回关于对象生命周期的信息的主要方法。
Reference queues are the garbage collector's primary means of feeding back information to the application about object lifecycle.
最直观的垃圾收集策略是引用计数。
The most straightforward garbage collection strategy is reference counting.
引用对象给垃圾收集过程带来了一些附加的成本。
Reference objects introduce some additional costs into the garbage collection process.
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