我要花一点时间感谢今天的主讲人，哈特先生和格雷女士。

I want to take a minute to thank the keynote speakers, Mr. Hart and Mrs. Grey.

youdao

我要花一点时间感谢今天的主讲人，哈特先生和格雷女士。

I want to take a minute to thank the keynote speakers, Mr. Hart and Mrs. Grey.

youdao