在这个结构中，究竟是用nested in 还是nesting in，取决于nest做动词时的用法。
据查，nest作动词时，应用nest in的句式，如：The birds are nesting in the woodshed.所以，在这个结构中应用nesting in, 而不是nested in。
有一提JJ有疑问,请指教
Now, new technologies allow manufactories to produce cars more fuel-efficient than those any time in the production history.
A) than any time.......
B) than those in any other time
C) than
我觉得应该补出those, B好像比较好
讨论：B代入后in any other time in the production history看上去很累赘，选C如何？
