While he was at work, a gendarme passed, observed him, and demanded his papers.

正在他工作时，有个警察走过，注意到他，便向他要证件。

youdao

While he was at work, a gendarme passed, observed him, and demanded his papers.

正在他工作时，有个警察走过，注意到他，便向他要证件。

youdao