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
I'd like to make an appointment to discuss a question.
我想约个时间讨论个问题。
Do you have a passport?
你有护照吗？
In the early days of the settlement of Australia,
在澳大利亚移民初期，