三讲教育：讲学习，讲政治，讲正气的英文：
three emphases education: to stress theoretical study, political awareness and good conduct

three coat,three bake
“三涂三烘” 工艺(反复涂三道漆，烘干三次的施工方法)

fiveteen contains five and three.
15可被5和3除尽。

To draw three feet of water
吃水三尺

An educator must first educate himself.
教育者必须自己先受教育。

Rural education reform is a hot spot in education research.
农村教育问题是目前教育界研究的一个热点。

social psychology of education.
教育社会心理学 。