R-value
n. 热阻（材料抗热流能力的量度）
🧩 词语组成解析
🗣️ 情景例句
I'm paying lots of money for you, so you'd better do well.
我为你花了那么多钱，所以你要好好干。
It's all personal effects.
这些东西都是我私人用的
He lived in this century, was born in Germany and spent the last part of his life in the USA.
他生活在本世纪，出生于德国，在美国度过了他的晚年。