This meant creating a tunnel more than one-and-one half kilometers long.

VOA: special.2009.02.21

Sometime it will just stop in the middle of a tunnel for however long.

有时候，地铁会久久地停在隧道的中间。

纽约的交通手段 - SpeakingMax英语口语达人

When you start describing the significance of a symbol like the tunnel, which recurs in the book, you immediately begin to limit it, and a symbol should go on deepening.

当你开始描述一个象征的意义,比如说在书中，反复出现的隧道，当你一开始予以限制，这个象征就会继续深化。

耶鲁公开课 - 1945年后的美国小说课程节选

Standing at the entrance of the tunnel I could see ahead of me a darkness so absolutely black it seemed a solid.

VOA: special.2009.12.07

In the middle of the room is a tall triangular tunnel that is covered in mirrors.

VOA: special.2009.03.11

At the end of the tunnel is a wall of brightly colored moving video images.

VOA: special.2009.03.11

A common design looks like a high tunnel.Unlike a greenhouse, which uses a heating system, a hoop house is heated by the warmth of the sun.

VOA: special.2009.12.22

Another room is a long black and white tunnel.

VOA: special.2010.03.05