翻译成英文：The lack of correlations in five LoBAL subsamples do not mean that ionization change scenario can be ruled out 如果these BALs are saturated 即使他们受到ionization change的影响他们的EW也只能发生很小甚至没有发生变化。另一种可能得情况是

The lack of correlations in the five LoBAL subsamples does not necessarily indicate that the ionization change scenario can be dismissed. If these BALs are saturated, even if they are affected by ionization changes, their equivalent widths (EW) may only undergo minimal or no changes at all. Another possible explanation is that these BALs could be experiencing BAL saturation or other variability mechanisms, such as clouds passing through the line of sight.