It was a pert, trim, smart little hat.
这是一顶活泼、整洁、漂亮的小帽子。
The greatest of thinkers, from Aristotle downwards, have tackled this little problem, which has a knack of baffling every effort, of slipping away and escaping only to bob up again, a pert challenge flung at philosophic speculation.
从亚里多德开始, 最伟大的思想家都解决了这个小问题,它有一个诀窍, 那就是费尽心机,溜走和逃脱, 然后又跳起来,这是对哲学思辨的重大挑战。