This time it was the doxycycline-sensitive strain that did better even though, in principle, it was not resistant to either drug.

• 第二个实验中，甚至从理论上来说对两种抗生素都无耐药性的这种菌群，反而生长得比拥有对脱氧土霉素耐药的菌群要好得多。