Preoxidation
预氧化
🗣️ 情景例句
Hi, John, how's it going?
嗨，约翰，你好吗？
One woman, in Peru, was saved from an earthquake by lying between two mattresses.
秘鲁的一位妇女，躲在垫子之间从地震中死里逃生。
Unfortunately you'll have to pay the fine before you check those books out.
在你借书之前你要先付清罚款。