Variable(displacement)pump
[化] 变量泵
🗣️ 情景例句
Well ... we ...
嗯……我们……
I am beginning to understand that my personality is very complicated.
我开始明白自己的性格非常复杂。
A lot of people object to mobile phones, especially when they are used in public places like restaurants or on public transport.
许多人都反对移动式电话，特别是在如饭店，公共交通车等公共场所使用移动电话。