词汇	grassland hoppergrass
释义	grassland hoppergrass 草原
随便看	rational function approximation rational-function approximation rational function field rational function field in n variables rational function interpolation rationalfunction model rational function model rational-function model rational function over a variety rational functions rational function solution rational game rational Gauss-Lobatto quadrature rational gaze rational generalization rational genetic algorithms rational geometric design rational geometry rational giants rational goal rational goal model rational gold price standard rational government rational gradation rational grammar