Leonard: No, it’s not crazy it’s, uh, it’s a paradox. And paradoxes are part of nature, think about light. Now if you look at Huygens, light is a wave, as confirmed by the double slit experiments, but then, along comes Albert Einstein and discovers that light behaves like particles too. (Penny just looks at him. To Sheldon) Well, I didn’t make it worse.
Paradox
【释】a statement containing two opposite ideas that make it seem impossible or unlikely, although it is probably true. (牛津)
有明显矛盾特征的人或事物：表现出让人费解或自相矛盾特点的人或事物
【例】the uncertainty principle leads to all sorts of paradoxes, like the particles being in two places at once。（牛津）
不确定法则导致了各种悖论和矛盾,比如粒子可以在一个时间点同时出现在两个位置。
【例】It is a paradox that such a rich country should have so many poor people living in it. （海词）
这真是个悖论,这么有钱的国家,这么多人生活在贫穷困苦之中。
but then
【释】on the other hand (introducing a contrasting comment) (有道)
表示转折
【例】He indicated that he was turning right, but then he turned left! (海词)
他说他要右转,结果左转了。
【例】He was once a secretary with a bright future ahead of him, but then he was accused of taking bribes. (自造)
他本来是个前途光明的秘书,结果他被控告受贿。
along come
【释】出现，产生
【例】the fire alarm rang and along came the firemen. (自造）
火灾报警器响了， 然后警察出现了。
【例】the chemical reaction is conducted, and along comes the blue light and smoke.(自造)
化学反应进行了,然后光和烟就产生了。