Fluorocarbon-14
[建] 四氯化碳
🧩 词语组成解析
[建] 碳氟化合物
fourteen
🗣️ 情景例句
He started with them almost forty years ago.
他在那里做了快四十年了。
I didn't like the taste of the medicine,but I took it anyway.
我不喜欢药的味道，但是我拿了它没办法。
Happy birthday! said Polly, and gave Ann her present---a red feather.
“生日快乐！”波利说，然后给安送礼物--一根红羽毛。