zài / kè / táng / shàng / lǎo / shī / jiǎng / jiě / kē / xué / fā / zhǎn / guān / xíng / chéng / de / bèi / jǐng

在课堂上，老师讲解科学发展观形成的背景。

In class, the teacher explained the background to the formation of the Scientific Outlook on Development.