Perithallium
围层
🗣️ 情景例句
Seven letters ... two words ...
七个字母……两个字……
We have vanilla,chocolate,and strawberry.
我们有香草，巧克力，还有草莓。
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。