natural meadow的用法和樣例：
例句
- Natural grassland is rationally utilized and the active grassland ecological protection is effective.
天然草地得到合理利用，草原生態保護積極有效。 - Thirdly,man-made grassland is being promoted so as to ease the pressure brought to bear on natural grassland by the ever-growing livestock population.
三是建設人工草地，減輕牲畜數量增加對自然草地的壓力。
