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

Another room is a long black and white tunnel.

VOA: special.2010.03.05