Scientists are still puzzling over exactly how the shoes work.

科学家们对于该鞋的工作原理仍感到困惑。

Scientists have been puzzling over how to transform surfaces for centuries.

几百年来，科学家们一直苦思冥想改变表面性质的方法。

Then I came to the question which had seemed to me most puzzling.

这时我提出了最使我迷惑不解的那个问题。

The notion of contingent identity is very puzzling.

偶然同一性是很令人迷惑的。

So, it's very puzzling how it could have obtained this shape.

所以我们始终搞不懂它的形状是怎么形成的。

The fact haven't taken yet is puzzling .

还没有许诺的事实却令人费解。

It can be very puzzling to those around us and to ourselves.

我们的择偶对象有时会使旁人或自己感到相当困惑。

He has been puzzling over the decision for two days.

这个决定让他苦思了两天。

But it was all very puzzling.

但这一切都是令人费解的。

The novel details the disappearance of the orphan Edwin under puzzling circumstances.

这本小说详细描写了诡谲的孤儿 Edwin 失踪案。