Efficaciousness
n. 有效;灵验
🗣️ 情景例句
Well, I never! I thought you were in HongKong.
哎，我真没想到！我还以为你在香港呢。
It takes two to make a quarrel.
要有两个人才吵得起来。
No, look, it says Closed. It's not open this morning.
不对，看！写着“关门”的，今天早上不开。