Their progress to the mountain was painfully slow.

VOA: special.2009.02.11

Trotsky's Literature and Revolution is a brilliant book, an attack on many things and a defense of certain other things, but in particular and very painfully an attack on the formalists.

列夫，托洛斯基的文学与革命非常精彩，它攻击了许多当时的理论，同时也维护了一些，但是它特别猛烈地攻击了形式主义者。

耶鲁公开课 - 文学理论导论课程节选

But if you take an animal and you give it a new food and then you shock it very painfully it won't avoid the new food.

但如果你给动物吃一种新食物,然后电击它，令其感到疼痛,它仍然会进食这种食物。

耶鲁公开课 - 心理学导论课程节选

A newly released history of 20th Century Russia, written by a team of 45 scholars and edited by historian Andrei Zubov, includes a statement that much of the country's recent past is painfully difficult to study, which is why many refuse to do so.

VOA: standard.2009.12.25