Messmotor
积分(直流)电机
🗣️ 情景例句
It's for a book.
是为一本书拍的。
If there were no clouds, we should not enjoy the sun.
吃得苦中苦，方知甜中甜。
I'm hoping to get to your showroom.
我打算到你们的展示中心看看，