He lay back on the grass using his backpack as a pillow.
他用背袋当枕头仰卧在草地上。
The grass was wet with early morning dew.
清晨的露水使得青草湿漉漉的。
Humans cannot digest plants such as grass.
人不能消化草类植物。
The dry grass caught fire.
干草着火了。
The runway is simply a strip of grass.
所谓跑道不过是一长条草地而已。