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1·Road under repair. No thoroughfare.

翻修路面，禁止车辆来往。《新英汉大辞典》

2·No thoroughfare for vehicles.; Close to traffic.

禁止车辆通行。《新英汉大辞典》

3·We tramped miles and miles and then saw at the roadside a board, which read: Idiot, no thoroughfare.

我们开车走啊走啊，最后在路边上看到了一块牌子，上面写着：笨蛋，此路不通。