Hardnester
锉式硬度试验器
🗣️ 情景例句
I'm so sorry.
很抱歉。
How much is it to rent an economy car?
租一辆经济车要多少钱？
How it came about that snakes manufactured poison is a mystery.
蛇是怎样产生毒液的，这是一个谜。