红黑树的每个节点都由rb _ node表示，它只包含子引用和父对象的颜色。

Each node in the red-black tree is represented by an rb_node, which contains nothing more than the child references and the color of the parent.

youdao

此规则还有一个特例，print(及其衍生物)和syswrite不会触发污染错误或子方法、子引用或哈希键。

The exceptions to this rule are that print (and derivatives) and syswrite do not trigger a tainting error or sub-methods, sub-references, or hash keys.

youdao

替换字符串可能包含对在之前的匹配中捕获的子序列的引用。

The replacement string may contain references to subsequences captured during the previous match.

youdao