Second-Level Domains 二级域名 ; 二级域
second-level domains ---
二级域名——
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The analysis of hydrophobicity and second level structure probability shows that there are two greatly similar domains located at 1-390 and 390-807 areas respectively.
疏水性和二级结构几率分析表明：有两个非常相似的结构域分别存在于1-390和390-807区域。
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It implies that top-level domains (after the dot) and second-level names (left of the dot) are the same.
FORBES: Cybersquatters Get Rich New Territories With Generic Domains
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