While working in the disconnected mode, you can still check source code for syntax and semantic errors and then connect only to submit a compiled file when you are ready to create the program objects.
当您在非连接模式下工作时，您仍然可以检查源代码的语法与语义错误，然后连接就只是为了提交一个汇编后的文件，这时您已经为创建项目对象做好了准备。
A machine can use equivalence of the URLs to check semantic equivalence — and WordNet allows you to go even further, using its thesaurus-like facilities for richer semantics.
机器可使用URL的等价物来检查语义是否等价——WordNet允许您在此基础上更进一步，使用它的同义词设置更丰富的语义。
Validity check (Default: basic validity check) : the validity check verifies that the data model follows the semantic rules for the model format.
validity check(默认值：basic validity check)：有效性检查，验证数据模型是否遵从模型格式的语义规则。
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