zì rán / jiào yù kè / shàng / lǎo shī / ràng / hái zi men / guān chá / xiàng guǒ / de / wài ké / hé / mào zhuàng / guǒ dòu

自然教育课上，老师让孩子们观察橡果的外壳和帽状果斗。

During the nature education class, the teacher asked the children to observe the acorn's shell and cupule.