????:1???????:?????200??

2?51????

3?????

4?????

5????????

???????????9??13??????????????? (???? ????????????)“??????????????????????????,???????????????,”??????????????9????????????????????12??75??????????????50????,?????????????????????????,“????????????????50?????????,??????,?????????????????????”

??????????????????????????????????,???????????????????????????400???

???9???????????12?????????????????,?????????,???????????????75???????????50?????????????(???)????????(????)?????????????????????? ???????? ???????????? ???

???,?????????????,??,?:?????????????????????????????????

??????,?50??????????????,?????????????(????)?????????????????????,???????,??????????????,???

?????(Bruce Ralston)???,?????????????,???????????

???“??????????????”???50??????????????????????????“?????”???,???????????

?????1974??????????????(?????)

???????????:??????