例句與造句

1. Location problems are optimal problems combined with reality and be followed with interest by operation researchers , managers , economists , strategists , urban planers and engineers since 1960s " . the research on location problems develops rapidly these years
   選址問題是一個(gè)有廣泛現(xiàn)實(shí)意義的最優(yōu)化問題，從20世紀(jì)60年代以來，受到運(yùn)籌學(xué)專家、管理專家、經(jīng)濟(jì)專家、軍事專家、城市規(guī)劃師、工程師等各方面人士的關(guān)注，得到了迅猛發(fā)展。
2. It's difficult to find operations researcher in a sentence. 用operations researcher造句挺難的