Have you ever tried getting a bilingual service from a computerized eaker ?

你试过电脑控制的扬声器提供的双语服务吗？

And we can no longer be satisfied when a native eaker puts his thumb up and says your english is good .

操英文母语的人再给我们竖起大拇指说我们英文不错时，我们已经不能满足了。

It is my pleasure to introduce the keynote eaker for tonight , dr. smith .

很荣幸介绍今晚演讲的主要来宾，史密斯博士。