All sugarcane in Australia has been harvested mechanically since 1979 .
All sugarcane in Australia has been harvested mechanically since 1979 .
从1979年起，澳大利亚所有的甘蔗都采取机械化收割方式。
All sugarcane in Australia has been harvested mechanically since 1979 .
从1979年起，澳大利亚所有的甘蔗都采取机械化收割方式。