| yuán zhǐ dōng 'ōu guó jiā | dōng 'ōu guó jiā de jīng jì zhuǎn guǐ |
| dōng 'ōu guó jiā hé nán sī lā fū nóng yè jīng jì | rén shì bù guān yú “ wén gé ” qián fù sū lián、 dōng 'ōu guó jiā liú xué de běn kē shēng xué xí qī jiān gōng líng jì suàn wèn tí de tōng zhī |
| rén shì bù guān yú wén gé qián fù sū lián dōng 'ōu guó jiā liú xué de běn kē shēng xué xí qī jiān gōng líng jì suàn wèn tí de tōng zhī | |