Plzj
[化] 掺镧锆钛酸铅
🗣️ 情景例句
Who has torn these pages out of the book?
谁撕掉书上的这几页？
I'm worried about the appearance of the floor.
我担心地板的外观。
The ideal to be aimed at was to devise an instrument that could record with a pen on paper,
当地震发生时，它能用笔在纸上记录下