R-values
(r-value 的复数) n. 热阻（材料抗热流能力的量度）
🧩 词语组成解析
n. 对价值的看法, 准则, 标准, 价值观念
🗣️ 情景例句
I have been exposed to languages such as English, Spanish, and French.
我接触过英语、西班牙语和法语。
It's a waste of time.
这是浪费时间。
'Oh, that,' he said with a smile as if he were talking about an old friend.
“噢，是它呀！他笑着说道，俨然在谈论一位老朋友。