afford的形容词是什么

　　We usually start off with the more affordable methods.

　　我们通常从更便宜的方法开始。

　　The demand for more affordable glasses rose drastically.

　　对更便宜眼镜的需求急剧上升。

　　Congratulations! Affordable housing is rare in this city.

　　恭喜你！这座城市经济适用房很少。