If the driver gets stuck or frustrated or loses his train of thought, the navigator and driver can switch roles.

如果驾驶员停滞不前或受到挫折或者失去了思路，导航员和驾驶员可以互换角色。

youdao

Read your neighbor's newspaper, switch seats on the train, or watch a new television program.

读读你邻居的报纸，火车上换个座位，或者看看新的电视节目。

youdao

You switch on your PC, you travel to websites without taking a train, to London or anywhere.

你打开你的电脑，你旅行在各网站不用乘火车，到伦敦或任何地方。

youdao

Sucking up all the air behind it, the train gave the switch a merciless working over.

NEWYORKER: Among Animals and Plants

Throw the switch before you send this train careening off a cliff.

FORBES: Butterflies, Trains And The National Debt

He said they managed to switch lines which slowed the runaway train so it came to rest as it reached an incline near Warren Street station in central London.

BBC: Runaway Tube train: Operators fined ?300,000