Unitane
二氧化钛
🗣️ 情景例句
And take measures to reinforce them. Please set your mind at rest.
并采取措施加固。请放心好了。
He lived in California until he was seventeen.
他生活在加利福尼亚直到他十七岁。
The students followed Uncle Wang to see the other machine.
学生们跟着王大叔去看另一部机器。