what does the sign"keep off the grass!"mean?怎么回答

what does the sign what does the sign mean. What does the sign mean in English? what does the sign mean咋回答 What does the sign on the wall means?改错 What does the sign meas?It means No t____ Could someone tell me what does this sign mean in mathematics?The sign ^. What does that sign mean? what does this sign mean? does,it,kepp,what,off,grass,this,the,the,sign,mean,means(?.) what does the signkeep off the grass!mean?怎么回答 What does the sign on the wall stand for?同义句 ----What does the sign read?----No water to put out the fire.这是一题改错题, What does that sign mean课件 what does this sign mean 的意思 a sign in the bar says “$10 cover”. What does that mean? does,it,keep,what,off,grass,this,the,sign,mean,means(?.) 先看看,句型； what does the sign mean?it mean……