Rockwell hardness
[化] 洛氏硬度
🧩 词语组成解析
n. 罗克韦尔（美国公司）；洛克威尔（姓氏）
hardness
['hɑrdnɪs]
n. 坚硬;<物>硬性;困难;冷酷;
🗣️ 情景例句
Would you please account for these problems?
请你谈谈这些问题，好吗？
He is having a nightmare.
他在做着噩梦。
I agree with you. We've got to do something about pollution. It's getting worse.
我同意你的看法。我们得对污染采取措施了。污染越来越严重了。