相反，限制性从句对主语的含义进行限定。
Restrictive clauses, on the other hand, limit the possible meaning of the subject.
某些句子用了逗号为非限制性定语从句，同没有用逗号的相比，意义有很大区别。
Compare the two sentences in the same group and find out the differences between them.
某些句子用了逗号为非限制性定语从句，同没有用逗号的相比，意义有很大区别。
Compare the two sentences in the same group and find out the differences between them.
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