lǎo / shī / ràng / wǒ / men / huà / yí / gè / bā / biān / xíng / bìng / biāo / chū / tā / de / bā / tiáo / biān

老师让我们画一个八边形，并标出它的八条边。

The teacher asked us to draw an octagon and mark its eight sides.