Variable stroke pump
[化] 变量泵
🧩 词语组成解析
stroke
[strok]
n. 一击;击球;划水动作;中风;
vt. 划掉;轻抚;轻触;敲击;
vi. 击球;作尾桨手，指挥划桨;
pump
[pʌmp]
n. 抽水机;打气筒;泵;轻软舞鞋;
v. 用泵输送 ;涌出;急速摇晃;盘问;
🗣️ 情景例句
to print my announcement.
刊登了我宣布竞选的消息。
Don't you care about this country's future?
难道你不会国家首任担忧吗？
The most economical age to capture an elephant for training is between fifteen and twenty years,
捕捉15至20岁之间年龄的大象进行驯练最为经济。