Hardnesses
(hardness 的复数) n. 坚硬, 困难, 严厉, 勇气\\n[化] 硬度
🗣️ 情景例句
No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么，但几乎可以肯定这并非意外。
We are even.
我们扯平了。
Thank you for your advice.
谢谢你的建议。