Trifluoride
三氟化物
🗣️ 情景例句
Nice to meet you, Alexandra.
很高兴见到你， Alexandra。
If the beard were all,the goat might preach.
如果长胡就好，山羊也可讲道。
Hi, Sam. This is Mike. How are you?
喂，萨姆。我是迈克。你好吗？