元素通常需要作为组成部分和节的前部内容。
A element is usually required as front matter for components and sections.
在组成部分比较短的情况下,可以立即开始使用块元素。
With a shorter component, you might immediately begin using block elements.
字段元素是模型定义的必需组成部分,因此需要在这里包括它们的道理实际上就不用多说了。
The fields element is a necessary part of the model definition, so there's not really much to say other than it needs to be there.
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