禁止入内

• No admittance
• off limits
• no entrance
• no entry

例句

1. 他在门上钉了一块牌子，上面写着：“禁止入内”。
   He nailed up a sign over the door which said: "No Admittance."
2. 我们不能走那条路，因为牌子上写著｀禁止入内＇。
   We can't go along that road because the sign says No Entry'.