Fluctuating voltage
[电] 增减起伏电压
🧩 词语组成解析
v. 波动（fluctuate的ing形式）
🗣️ 情景例句
Yes. This is Richard Stewart.
是的。我是Richard Stewart。
Knowledge advances by steps not by leaps.
知识的获得是循序渐进而不是突飞猛进的。
Some live in large groups like the honey bee, and make their nests in trees or holes in the rocks.
有些蜂如蜜蜂是群居在一起，在树上或岩洞里筑巢。