The line of reasoning will only lead you up another blind alley.

　　那種推理方法只會把你引進另一條死胡同。

　　When he saw the police arrive, he bolted down an alley.

　　他看見警察來了，便從小巷逃走了。

　　The Internet has proved a blind alley for many firms.

　　事實證明，因特網(wǎng)對許多公司而言是一條行不通的路。

　　The side alley was walled off from the back garden.

　　側(cè)巷和后花園之間用墻隔開了。

　　Each front door looks across a narrow alley to the front door opposite.

　　家家大門對大門，中間隔著一條窄巷。