They stopped scout in the mountainous area.他们停止了在那山区的侦察活动。In the lighted doorway stood the mountainous figure of a woman...一个身材高大的女人站在灯光明亮的门口。Encompassing over a million square miles, this remote and mountainous domain p...
无差异曲线通常呈凸形.An indifference curve is usually assumed to be convex.我们现在开始接触到值得引起注意的无差异曲线.We come now to the really remarkable thing about indifference curves.而既往吸烟者同不吸烟者之间无差异.Similar calculations erased the sick - day gap ...