Tetrabase
[医] 对对四甲基二氨基二苯甲烷
🗣️ 情景例句
Yes? Can I do something for you?
什么事？我能为您效劳吗？
A fall into the pit, a gain in your wit.
吃一堑，长一智。
The boys felt tired so they put out the fire and crept into their tent.
于是他们扑灭了篝火，钻进了帐篷。