有时那个标准，即使并非不可能，也是很难达到的。
Sometimes that standard is quite difficult, if not impossible, to achieve.
准确地设想，即使并非不可能，也是很困难的——这就是范型变化的自然特性，它们无法被预测。
It is hard, if not impossible, to imagine exactly what it would be - such is the nature of paradigm shifts, they cannot be predicted.
机械通风设备使他们难于(即使并非不可能)表达他们的需要，或者是询问有关他们治疗情况或幸存几率的问题。
Ventilators make it difficult — if not impossible — for them to communicate their needs, or ask questions about their treatment or survival chances. Dr.
机械通风设备使他们难于(即使并非不可能)表达他们的需要，或者是询问有关他们治疗情况或幸存几率的问题。
Ventilators make it difficult — if not impossible — for them to communicate their needs, or ask questions about their treatment or survival chances.Dr.
机械通风设备使他们难于（即使并非不可能）表达他们的需要，或者是询问有关他们治疗情况或幸存几率的问题。
Ventilators make it difficult -- if not impossible -- for them to communicate their needs, or ask questions about their treatment or survival chances.
然而即使这并非是不可能，但要掌控它将是困难的。
即使并非完全不可能知道，至少在目前不可能。
Or, if not impossible, at least impossible at the present time.
即使并非完全不可能知道，至少在目前不可能。
Or, if not impossible, at least impossible at the present time.
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