NEAR 网络上有多少种不同类型的节点可用？
How many different types of nodes are available on the NEAR network?
根据 nearprotocol.com 上可用的文本，这些节点之间的差异是用户空间中的行为问题，还是它们实际上是在节点本身的实现级别编码的？
换句话说，这些差异是关于人们在参与网络时所做的选择，还是我可以以某种方式启动一个不同的节点以使其充当 "chunk producing node" 与 "fishing node" ？
Three types of validator nodes contribute to securing the NEAR network:
- Chunk producers, who collect transactions for a shard and produce and communicate shard blocks, called chunks
- Block producers, who produce a single block containing all current chunks
- Fishermen, who watch and verify that state transitions in different blocks are accurate
那些抵押超过最低渔民门槛但未被选为验证者的人成为渔民。
根据 nearprotocol.com 上可用的文本，这些节点之间的差异是用户空间中的行为问题，还是它们实际上是在节点本身的实现级别编码的？
换句话说，这些差异是关于人们在参与网络时所做的选择，还是我可以以某种方式启动一个不同的节点以使其充当 "chunk producing node" 与 "fishing node" ？
Three types of validator nodes contribute to securing the NEAR network:
- Chunk producers, who collect transactions for a shard and produce and communicate shard blocks, called chunks
- Block producers, who produce a single block containing all current chunks
- Fishermen, who watch and verify that state transitions in different blocks are accurate
那些抵押超过最低渔民门槛但未被选为验证者的人成为渔民。