那些新近从事内核开发的人开始时的工作可以选择列表中的条目，这样让他们可以通过小项目学习如何编写内核代码，同时有机会为社区做出贡献。
Those who are new to kernel development can work on items from this list, allowing them a chance to benefit the community while learning how to write kernel code on smaller projects.
然后构造函数打印出一条警告消息指明没有回调函数，因为列表是不可变的，所以我们没有机会用一个新的值来替代现有的回调函数列表。
The constructor then prints a warning message that there are no callbacks, since lists are immutable and there is no way to replace the callback list val with a new one.
产品待办事项列表有个有机体般的特征:它会演化，而且它的内容会经常变化。
The product backlog has an organic quality. It evolves, and its contents change frequently.
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