R-values
(r-value 的復數) n. 熱阻（材料抗熱流能力的量度）
?? 詞語組成解析
n. 對價值的看法, 準則, 標準, 價值觀念
??? 情景例句
It was about caring.
談到關心。
I can't tell you how sorry I am.
我不知道我該怎樣道歉。
He waved desperately to his companion, who had been water skiing for the last fifteen minutes.
他絕望地向他的伙伴揮手，他的伙伴在過去的15分鐘里一直在滑水。