一是语意记忆，也就是没有亲身经历，而是从自觉学习上获得的记忆，历史课就是个例子。
One, semantic memory, records things consciously learned without first-hand experience-history lessons at school, for example.
锁定语意的设计是为了避免两个不同处理序中执行的持续性服务，同时将相同的工作流程执行个体载入记忆体中。
The locking semantics are designed to prevent persistence services that run in two different processes from loading the same workflow instance into memory at the same time.
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