Federacy
n. 联盟, 同盟
🗣️ 情景例句
I've been doing this job for 25 years, and I tell you you're going to stuff it up doing things this way.
我干了这工作已有25年了，告诉你，你这样做事情，会把事情办糟的。
Rain comes after sunshine, and after a dark cloud, a clear sky.
晴日之后有雨水，乌云过去见青天。
The first records the arrival of longitudinal vibrations.
首先记录下的是纵向波的到达；