Dea
abbr. [军]数据交换协议（Data Exchange Agreement）；禁药取缔机构（Drug Enforcement Administration）
🗣️ 情景例句
What do you often do in your spare time?
你在业余时间都干些啥？
On a crowded train, one comes in contact with many people.
在拥挤的火车里面，会和许多人接触。
Yes, we are.
是的，我们是来旅游的。