span;go beyond;straddle;stride across;step over;cut across;surpass ～國(guó)界 go beyond the national boundary/～界限surpass the bounds /～1999年的合同contract that goes beyond 1999;contract that straddles 1999 /～兩個(gè)社會(huì)發(fā)展階段span over two stages of social development/～障礙surmount obstacles