Preambles
n. 序( preamble的复数形式 ); 绪言; （法令、文件等的）序文; 前言
🗣️ 情景例句
When you arrive, be sure to register with you consulate.
你到达时，记得去领事馆登记。
How long?
多长？
We were developing too much waste.
生产出来的废品太多了。