It is.And what the researchers found was that, just like what happens with one drug, with a couple drugs it left still a few bacteria left in this population that were really good at fighting these antibiotics.

是的。研究人员发现，就像一种药物发生的情况一样，在两种药物中，仍有一些细菌留在人群中，这些细菌非常擅长对抗这些抗生素。

It is. And what the researchers found was that, just like what happens with one drug, with a couple drugs it still left a few bacteria left in this population that were really good at fighting these antibiotics.

是的。研究人员发现，就像使用一种药物所发生的情况一样，使用几种药物时，仍然会在该群体中留下一些真正擅长对抗这些抗生素的细菌。