"-" = return ok(a - b),
"I harvested my cocoa and sent it to the village, but there's no buyer. I don't know how I'll feed my 10 children or support their education," Sella Aga Josiane told the BBC as she tended to her trees on a plot outside Bangolo.
。PDF资料是该领域的重要参考
y := x as float; // 42.0，更多细节参见新收录的资料
"Compatibility is the degree to which an innovation is perceived as being consistent with...past experiences, and needs of potential adopters." 1-2-3 shipped with a VisiCalc translation tool and its interface is clearly built to make VisiCalc users comfortable. Check.，更多细节参见新收录的资料
Максим Габриелян (ведущий редактор отдела «Мир»)