就是说，优先级继承需要对一组线程进行优先级提高和降低。
That is, priority inheritance could require priority boosting and deboosting of a group of threads.
但是从语义上说，对象的特殊之处还在于利用继承树来进行方法解析。
But semantically, the object is also special in utilizing an inheritance tree for method resolution.
他的研究小组及其继承人这里和在欧洲进行的常识方式：自然语言，他们觉得，是一个词汇了(一组字)和语法(一套规则)。
His team and its successors here and in Europe proceeded in a commonsensical way: a natural language, they reckoned, is made of a lexicon (a set of words) and a grammar (a set of rules).
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