以上来源于: WordNet
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。
They form a grammaticalization sequence and the action weakens gradually. And the semantic change is closely related to the syntactic context of pivotal construction.
这三种意义形成一个意义逐渐虚化、动作义不断减弱的序列，这种语义变化与其处于兼语式的句法环境密切相关。
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