Students were initially selected, with 2 acting as backup in case of unfortunate events such as the lack of Passports or other documents.

最终10名学生被选上，其中2名作为后备，以防出现诸如没有护照或其他证件的问题。

youdao

Students were initially selected, with 2 acting as backup in case of unfortunate events such as the lack of Passports or other documents.

最终10名学生被选上，其中2名作为后备，以防出现诸如没有护照或其他证件的问题。

youdao