Du Cros said that it’s hard enough dealing with MDR-TB, let alone an even stronger strain of the bacteria that causes XDR-TB or extensively drug resistant tuberculosis.

Du Cros 说， 处理多药已经够难了，更不用说导致药药的更强菌株了。

You may hear about MDR-TB or multi-drug resistant TB, or even XDR-TB which is extremely drug-resistant TB which are credibly hard-to-treat because they don't die in the presence of our usual antibiotics.

你可能听说过MDR-TB，即多重药物抵抗TB，甚至是XDR-TB，即极度药物TB，极其难以治疗，因为它们并不能用我们普通的抗生素杀灭。