1.A production possibilities frontier with a bowed outward shape.2. With the increse in the productivity, the curve will shift to the right.3. The increased productivity of one goods will result in the change of the curve. 初级微观经济学中曲线的移动一般有两种，一种是沿着曲线的移动，用the movement along the curve,一种是整个曲线的移动，用the curve shifts to right/l...
弧形是curve 我不太清楚你说的是什么形状的弧形 翻译：As the productivity increases,the curve expands outwards.或者 The curve expands outwards with increasing productivity.One of the increased produc...
