It also explained why nitroglycerine, the well-known explosive, soothes the heart pain known as angina.

这也释了为么硝酸甘油，即人所熟知的炸药，能够缓痛。

Put hope and desperation together, and what do you get? The political equivalent of nitroglycerine.

把希望与绝望放在一起，你会得到么呢？在政治上这等同于一个炸药包。

But by around 1880, doctors began to realize that nitroglycerine was even more effective and faster acting for heart problems than amyl nitrite.

但是到了 1880 年左右，开始意识到，硝酸甘油比亚硝酸戊酯对脏病的疗效更有效、作用更快。

Even after it became an accepted treatment for angina, the technical term for chest pain, what exactly nitroglycerine does to the circulatory system remained a mystery for a long time.

即使在它成为痛（胸痛的技术术语）的公认治疗方法之后。硝酸甘油究竟对循环系统有么作用，长期以来一直是个谜。