Plzj
[化] 掺镧锆钛酸铅
🗣️ 情景例句
Can we? When?
行吗 ？什么时候？
To read without reflection is like eating without digestion.
学而不思，犹如食而不化。
Education, with its cycles of instruction so carefully worked out,
教育，以其教学周期如此精心地安排，