napiergrass

例句：

1. 1. The grass was so tall thatit blocked the sun's rays.
   草长得很高，挡住了阳光。
2. 2. The grass isgreen, and it looks very healthy.
   草是绿色的，看起来非常健康。
3. 3. The grass isa symbol of nature and growth.
   草是自然和成长的象征。