除标准的散列关系之外，现在还有一个可遍历整个集合的链表。
In addition to the standard hashing relationship, there is now a linked list that traverses through the collection.
除吸烟外，男性肺癌还与肺部疾患史和家族肿瘤史关系密切，而女性则有所不同。结果还表明新鲜蔬菜可降低肺癌危险性，绿茶也有这种倾向。
Besides smoking, respiratory system diseases history and family tumor history were also important risk factors in male, but it was not so in female.
除吸烟外，男性肺癌还与肺部疾患史和家族肿瘤史关系密切，而女性则有所不同。结果还表明新鲜蔬菜可降低肺癌危险性，绿茶也有这种倾向。
Besides smoking, respiratory system diseases history and family tumor history were also important risk factors in male, but it was not so in female.
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