Densometer
n. (纸张)透气度测定仪, 密度计
🗣️ 情景例句
What's the exchange rate today?
今天的兑换比率是多少？
By the time we got there,the play had already begun.
等我们到那里，戏已经开始了。
We've got some cheaper ones in the back room.
后面房间里有一些比较便宜的。