And they don't ask a married couple with no children Why don't you have any children?.
他们也不会问结了婚没有孩子的夫妇“你们为什么不要孩子?”。
for the simple reason that I was left with several curiously shaped bits of metal which did not seem to fit anywhere.
原因很简单,因为还剩下几个形状奇特的零件似乎哪里也装不上去。