1·What her last illness was, I am not certain: I conjecture, they died of the same thing, a kind of fever, slow at its commencement, but incurable, and rapidly consuming life to wards the close.
她最后得的是什么病，我不大清楚，我猜想他们是因同样的病而死去的，即一种热病，病起时发展缓慢，可是无法医治，而在最后很快地耗尽了生命。
2·It is, in short, impossible for us to conjecture the causes or circumstances which may have alienated them, without actual blame on either side.
简单地说，除非是我们有确确实实的根据可以责怪任何一方面，我们就无从凭空猜想出他们是为了什么事才不和睦的。
3·To understand the poincare conjecture, start by thinking of any object existing in a three-dimensional world.
要理解庞加莱猜想，当始于对三维世界存在的一切物体的认识。
4·What went on inside the Hambleden villa is, of course, a matter of conjecture.
当然了，汗布尔登里发生的这一切只是一种猜想。
5·But the recent solution of another challenging problem, the poincare conjecture, gives us hope that even the most elusive problems can be conquered.
但最近，我们解决了庞加莱猜想这一难题，对于这一具有挑战性的问题的解决方式则给了我们希望，让我们有希望解决甚至是难以琢磨的问题。