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
Keep cool.
保持冷静。
I say little but I think the more.
我说得少，但我想得多。
the man sadly picked up the mattress and carried it into his house.
伤心地捡起了床垫，把它拿进了屋。