Chalkography
金相学
🗣️ 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。
The flood has left many people homeless.
许多人因洪水而失去了家园。
People travelling long distances frequently have to decide whether they would prefer to go by land, sea, or air.
出远门的人常常需要决定是走旱路、水路，还是坐飞机。