Vacuum cavity
[医] 真空腔
🧩 词语组成解析
🗣️ 情景例句
and making it a new community center.
使它成为一个新的社区中心。
After graduation, Mr. Jones immediately became a member of the United Nations Relief and Rehabilitation Administration.
毕业后琼斯先生就加入了联合国救济善后总署。
My name is Ma Lili.
我叫马莉莉。