Concentration fluctuation
[建] 浓度升落
🧩 词语组成解析
fluctuation
[,flʌktʃʊ'eʃən]
n. 波动，涨落，起伏，[物]脉动;动摇不定，踌躇;[生]彷徨变异;
fluctu 波浪 + ation 表示行为、情况、状态、过程、结果 → n.波动, 起伏
🗣️ 情景例句
I really enjoyed talking with you.
很高兴和你聊天。
He's not feeling very well today.
今天他觉得不舒服。
As you know, I am a very kind person.
你知道，我是个很和善的人。