人口零[增长

　　In @the not to_ =o dis
=ta]*nt f_:uture, a# v#ery smoggy and ov^)er:po?pulated ] Earth govern(!ment mak[(es \it ill%]ega(l to _`have `%*ch_:ildren for a generation. One co%upl/%e,
 unsatis$!(fi?,)^ed with their substitut$e robot b;.aby, breaks $[;!the r%#ules and gets in a lot o!f tro%uble. (Z.P.G.%\= stan.ds for Zero Popul- ;#ation Grow:;th^:).