???????λ???λ??????????????????
????3000??????? ?????????????η???????????涨??????????????????????顢?????′????18????в?????????У??????У????????????????绰?????????????и??Щ??????????
????1985???ɡ???е???????д????????????°????
30??λ????????У?o??????????з??Щ???δ?????????úy?
30????仯?80???￥У???????·?·?У?????????е???????У???
?к???о???????????????????????λ?????????????????壩
??
?
?