Even more alarming, well over half of these cases were resistant to multiple drugs right from the start, and not as a direct result of substandard treatment.
甚至更令人震惊的是，这些病例有一半以上一开始即具有耐多药性，并不是因不规范治疗而造成的直接结果。
2
So is the fact that the well was not fitted with multiple pressure resistant casings, a decision which may have been key to the initial blowout.
同样，实际上，油井并没有安装能抵制多重压力的匣子，这一决定可能成为最初爆裂的主要原因。
3
Once ovarian cancer becomes resistant to multiple types of chemotherapy, fewer treatment options exist and the focus becomes lengthening patients' survival periods.