Gyrolite
白钙沸石
🗣️ 情景例句
I just can't understand
我就不懂
What is he doing?
他做什么事？
With practice, no doubt, I could in time learn to write by holding the pen still while the paper moved.
毫无疑问，经过练习，我最终能够学会笔不动而纸动来写字。