dìlǐ / kè / shàng / lǎoshī / ràng / wǒmen / zài / ànshè / dìtú / shàng / biāochū / zhǔyào / héliú

地理课上，老师让我们在暗射地图上标出主要河流。

In geography class, the teacher asked us to mark the major rivers on a blank map.