Chie
[机械]小型多级卧式变频泵
🗣️ 情景例句
Since English is not your native tongue.
因为英语不是你的母语。
What's eating you?
怎么搞的？
Similarly, our own present primitive chemical rockets, though good enough to orbit men,
同样，我们目前使用的原始化学火箭，虽然可以把人送入轨道，