到这时，彼得终于可以送一口气了，他成功地满足了所有监听者的需求，同时避免了与特定实现的紧耦合。
At this point, Peter breathes a sign of relief. He has managed to satisfy the requirements of all his listeners without having to be closely coupled with the specific implementations.
到这时，彼得终于可以送一口气了，他成功地满足了所有监听者的需求，同时避免了与特定实现的紧耦合。
At this point, Peter breathes a sign of relief. He has managed to satisfy the requirements of all his listeners without having to be closely coupled with the specific implementations.
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