He paced up and down (the platform), waiting for the train.

他(在月台上)踱来踱去等候火车。

youdao

He tramped up and down the platform waiting for the train.

他脚步沉重地在月台上走来走去，等候火车。

youdao

He tramped up and down the platform waiting for the train.

他脚步沉重地在月台上走来走去，等候火车。

youdao