Variable(displacement)pump
[化] 变量泵
🗣️ 情景例句
What are you majoring in?
你主修什么专业？
Just listen to me, and you'll be fine.
听我的准没错。
and another 700 for the survivors to be reduced by half again.
剩下的一半人再过700年，才会又减少一半。