Fluctuating current
[电] 增减起伏电流
🧩 词语组成解析
v. 波动（fluctuate的ing形式）
🗣️ 情景例句
Make another left to Wooster.
再向左转就到了Wooster街了。
The old man fumbled with the key in the dark.
老人在黑暗中摸索着寻找钥匙。
I don't know. I've got a headache and a cough.
我不知道。我头痛和咳嗽。