Two-speed pump
[化] 两级泵
🧩 词语组成解析
two
[tu]
n. 两个;两个东西;两点钟;一对;
adj. 两个的;我同;
num. 两个;第二;二;
speed
[spid]
n. 速度;快速;昌盛;（汽车的）变速器，排挡;
vt.& vi. 急行，加速;
vi. 超速;加速;迅速前行;兴隆;
vt. 加快…的速度;使成功，使繁荣;
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
Sam, this is Susan. Sam
我是Susan。
Only fifteen minutes.
只要15分钟。
As Earth-dwellers, we always cherish the hope that we will be visited by little green men and that we will be able to communicate with them.
小绿人来拜访我们，而我们可以和他们交流。