The official language of the conference is English but papers in Chinese are welcome.

大会的官方语言是英语，但是我们欢迎中文论文。

youdao

First, I 7 filed retirement papers and made it official.

首先，我提交了报告，正式申请退休。

youdao

First, I 7 filed retirement papers and made it official.

首先，我提交了报告，正式申请退休。

youdao