Rayox
二氧化钛
🗣️ 情景例句
About eight o'clock?
差不多八点钟好吗？
The tour will take about an hour and a half. We ought to be back here by 3:00.
参观大概要一个半小时，3点钟以前回到这里。
He wants to ride the machine like a bike and fly it like a plane.
他想让机器可以像自行车那样骑，可以像飞机那样飞。