Preexisted
v. 先前存在( preexist的过去式和过去分词 )
🗣️ 情景例句
It's Zhao, Z-H-A-O.
姓赵，Z-H-A-O。
One sows another reaps.
不劳而获。
you will realize that a modern navy is a good place to study noise.
你就会认识到现代海军是研究噪音的好地方。