A block has a storage capacity, and once it's used up, it can be closed and linked to a previously served block.
You can also use an arbitrary block as a filter:
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（二）在车辆、行人通行的地方施工，对沟井坎穴不设覆盖物、防围和警示标志的，或者故意损毁、移动覆盖物、防围和警示标志的；，更多细节参见heLLoword翻译官方下载
Полина Кислицына (Редактор)，更多细节参见服务器推荐