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 ...
The dried herb is obtainable from health shops.这种干药草能在保健店里买到。...delicious cheeses which are obtainable anywhere in France.在法国随处可以找到的美味奶酪Full details are obtainable from any post office.详情可至任何邮局索取。Our product is obtainabl...