Hardness number
[医] 硬度数
🧩 词语组成解析
hardness
['hɑrdnɪs]
n. 坚硬;<物>硬性;困难;冷酷;
🗣️ 情景例句
Thanks, Linda.
谢谢，Linda。
Judy is so reserved that it is hard to understand her.
朱迪非常内向而木讷，因而很难使人了解她。
only of metal, which wears away by friction.
而是由金属组成，而金属可以随着磨擦而磨损殆尽。