Unipump
单一泵, 摩托泵, 组合泵, 内燃机泵
🗣️ 情景例句
If you watch carefully you will see how to do it.
你若细心观察，就会知道怎么做这件事。
There's nothing interesting in the newspaper.
报纸上没有什么有趣的新闻。
That's better.
好多了。