He was walking up and down the station platform.

他在火车站的月台上走来走去。

youdao

He is walking up and down the platform.

他在站台上走来走去。

youdao

He was walking up and down the station platform.

他在获吹站的月台上走来剡去·…词形变化。

youdao

He was walking up and down the station platform.

他在获吹站的月台上走来剡去·…词形变化。

youdao