笑捻粉香归洞户,更垂帘幕护窗纱,东风寒似夜来些。167杜荀鹤:春宫怨Current wisdom says that (当前流行的看法认为)if you want a successful product, you need first to perform detailed market analysis, making sure that there are plenty of people who need the new product and that your entry into the market will be able to gain a significant share of that market. |