The recursiveness of phrase structure rules：These rules can generate an indefinite number of sentences,and sentences with infinite length,due to their recursive properties.
由于它们具有循环特征，可以生成无数
长度无限的句 http 16555.soupay. 子来。
语结构；词组结构The recursiveness of phrase structure rules：These rules can generate an indefinite number of sentences,and sentences with infinite length,due to their recursive properties.
由于它们具有循环特征，可以生成无数长度无限的句 http 16555.soupay. 子来。
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