Subfluoride
低氟化物, 氟化低价物
🗣️ 情景例句
No. She's at work now.
不在，她正在上班。
He's the same as always.
他还是老样子。
It's very difficult to see where we're going and the shower may pass in an hour or two. Let's rest and have some food.
“现在很难看到我们要去的地方。阵雨可能一两个小时就会过去，我们休息一下吃点东西。”