While there are major syntactic differences among the tools' aspect declaration style, the core AOP semantics are similar.

虽然工具的方面声明风格之间存在主要的语法差异，但是核心的aop语义是类似的。

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Syntactic decisions will come up again when we take a look at semantics in the next section, and also affect tool support, which I'll discuss in Part 2.

当在下一节中查看语义的时候，语法决策还会出现，而且也会影响在第2部分中讨论的工具支持。

youdao

Symbols that cause syntactic errors for single use and require an escape character to change semantics.

单个使用会导致语法错误而需要通过转义字符来修改语义的符号。

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