Efficaciousness
n. 有效;灵验
🗣️ 情景例句
No. He left a note on the door
是的。他留了一张条子在门上
I always answer Harmony in the department.
我总是回答说是部门的和谐。
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。