Additionally, this program can announce the delivery notification with a special sound, at your will.

此外，这个计划可以宣布交付通知特别声音，在您的意愿。

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To test this failed subscription notification delivery scenario, we can use a mock.

为了测试这个失败的订阅通知发送场景，可以使用mock。

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To test this failed subscription notification delivery scenario, we can use a mock.

为了测试这个失败的订阅通知发送场景，可以使用mock。

youdao