Orography
n. 山志学, 山岳形态学
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
It's an air-conditioner.
这是空调。
When I touched him on the shoulder, he turned around.
我拍他的肩膀，他转了过来。