Dcor
abbr. Defense Committee on Research (USAF) 防御研究委员会（美国空军）
🗣️ 情景例句
I've seen pictures of him.
我见过他的照片。
A book is the same today as it always was and it will never change.
一本好书今天如此，将来也如此，永不改变。
There was a murder in London yesterday.
昨天伦敦发生了一起谋杀案。