grass是什么意思？

　　例句：

　　1. The grass had withered in the warm sun.

　　這些草在溫暖的陽光下枯死了。

　　2. There was a smell of trampled grass and earth.

　　有踩爛的青草與泥土的味道。

　　3. He lay back on the grass using his backpack as a pillow.

　　他用背袋當枕頭仰臥在草地上。

　　4. With one accord they turned and walked back over the grass.

　　他們步調一致地轉身走過草坪。