Potassium-argon
a. 钾氩测年法的
🧩 词语组成解析
potassium
[[pə'tæsiəm]]
n. 钾\\n[化] 钾K
argon
[['a:gɔn]]
n. 氩\\n[化] 氩Ar
🗣️ 情景例句
They'll just make him sad.
那些只会让他悲伤。
He seldom came to see his wife, did he?
她不来看他妻子，是这样吗？
The child learning to see, first distinguishes only two-dimensional shape;
正在学看东西的儿童起初只会分辨二维形态，