keep off grass是什么意思

　　Keep off the grass, please!

　　请勿践踏草坪！

　　Keep off the grass.

　　勿踩草坪。

　　Keep off the lawn [ grass].

　　请勿践踏草地。

　　It means "Keep off the grass".

　　它的意思是“禁止践踏草坪”。

　　He told the boys playing football to keep off the grass.

　　他告诉那些踢足球的孩子们不要践踏草坪。