英语语法分析

Wanderers, by contrast, bring fresh genes.

而相比之下，流浪汉却带来了新品种的基因。

These wanderers were once part of India's mainstream.

这些流浪者曾经是印度的主流。

Wanderers have one clear advantage. Nest mates and neighbours are likely to be relatives.

流浪汉有着一个非常明显的优势，而守家奴与邻家男很可能有血缘关系。