Hardnesses
(hardness 的复数) n. 坚硬, 困难, 严厉, 勇气\\n[化] 硬度
🗣️ 情景例句
Use a dictionary and grammar guide constantly.
经常使用字典和语法指南。
Please let me apologize.
请让我致歉意。
Oh, thank you. I would love to.
噢，谢谢你！我很乐意！