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
Good idea.
好。
I've forgotten what time he said he had dinner last night.
我忘记了他昨晚什么时间吃晚饭的了。
No, not very. You need a driving permit. Have you got one?
不，不很贵。你需要一个驾驶执照。你有没有？