Continuous current dynamo
[电] 直流电机
🧩 词语组成解析
🗣️ 情景例句
The advanced exercise class is not so easy, huh?
高级健身班不是那么容易吧， 对不对？
I'll call the roll before class.
课前我要点名。
The moment he reached the country, he started his search.
他一到达冈比亚，就开始探寻工作。