泰国大中小学汉语教学体系较为完备，汉语教学发展迅速。

With a complete Chinese teaching system from primary to higher education, Chinese teaching in Thailand has developed rapidly.

大中小学里的许多教师，似乎比他们最最迟钝的学生还要呆滞；

There are many teachers in schools and colleges who seem duller than the dullest of their pupils;

在刚果，田径运动普遍存在于各大中小学、培训学校以及国家队。

At the Republic of Congo, track and field is common in elementary schools, middle schools, training schools and national teams.

课堂计算机辅助教学是信息技术应用于教育的核心，是我国大中小学计算机辅助教育的应用重点。

GAI is developing more rapidly than ever and has become the core of applying the information technology to education.