Luckily, we're getting better at managing those cross-species viruses, but how close are we to curing HIV?

幸运的是，我们正在更好地管理这些跨种病毒，但我们离治愈HIV有多近呢？

Users can group and refine biological data according to many criteria, including cross-species analyses, disease links, sequence variations, and expression patterns.

用户能够根据很多标准进行分组和提炼生物学数据，包括跨物种的分析，疾病链接，序列变异及表达模式。

Virologists brought in to hunt down the Sars virus always suspected that it had lingered in farmyard or domestic animals before making the cross-species jump into humans.

找寻非典病毒的病毒学家们早就怀疑，该病毒在传染给人类之前就已在农场和家畜中存在了。