Efficaciousness
n. 有效;灵验
🗣️ 情景例句
I'm retired.
我退休了。
I want a package deal including airfare and hotel.
我需要一个成套服务，包括机票和住宿
The porter went to fetch one and arrive back with the station master,
搬运工跑回去取时刻表，同时请来了站长。