Skewback
n. 拱脚斜(石)块, 拱座
🗣️ 情景例句
I only buy used books.
我只买旧书。
After death, the doctor.
放马后炮。
The spheres had been magnetized and attracted or repelled each other all the time.
金属球经过磁化，互相之间不停地相互吸引或相互排斥。