这种随意的途径并不象人们所预期的那样无把握。

This random approach is not as dubious as one might expect.

改造人是冗长而无把握的工作，绞刑则是举手之劳。

To reform a man is a tedious and uncertain labour; hanging the sure work of a minute.

事实上，这个方法是很费事、很困难而且是无把握的。

In practice, the method is tedious, difficult, and uncertain .