Counterfactual scenarios are highly problematic to say the least .

设想与现实相反的情形，至少是很有问题的。

With a disease so horrible and treatment problematic prevention is the mainstay of public health .

狂犬病如此可怕，而治疗仍然是疑难问题，所以公共卫生应以预防为主。

The plan itself has problematic aspects .

该计划本身在某些方面是有问题的。

Some of the remedies are problematic .

一些抵抗措施是有问题的。

But the old guidelines were problematic , lewis said .

但是刘易斯说，那些旧的指导方针是存在问题的。